Lebanon, NH Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
- Cooler national band · Avg annual temp
- 46°FAnnual mean temperature: 46.0°F. National station-mapped location corpus median: 52.2°F across 6,861 measured records.
- At score median · Comfort score
- 64/100PlainClimate Comfort Score: 64/100. National station-mapped Comfort Score corpus median: 64/100 across 6,189 measured records.
- Wetter than median · Annual precip
- 38.1"Annual precipitation: 38.1 inches. National station-mapped location corpus median: 36.2 inches across 6,352 measured records.
- Short-season national band · Growing season
- 150dFrost-free growing season: 150 days. National station-mapped location corpus median: 180 days across 6,446 measured records.
30-year climate normals (1991-2020) from Lebanon's primary NOAA station, LEBANON MUNI AP.
The climate verdict for Lebanon
Lebanon, New Hampshire has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 46°F. Its climate comfort score of 64/100 (good) lands mid-pack nationally, exceeding 49% of station-mapped location scores.
- 46°F
- annual average temperature (NOAA normal)
- 64/100
- comfort score, above 49% of station-mapped location scores
- 38.1"
- yearly precipitation total
- 150 days
- growing season, frost-free days
Based on NOAA U.S. Climate Normals (1991–2020) - 30-year averages describing the typical year, not a forecast.
Avg Temperature
46°F (8°C)Annual mean temperature: 46.0°F. National station-mapped location corpus median: 52.2°F across 6,861 measured records.
Cooler national band
Avg High
58°FAnnual average daily high: 57.5°F. National station-mapped location corpus median: 63.8°F across 6,861 measured records.
Cooler national band
Avg Low
35°FAnnual average daily low: 34.6°F. National station-mapped location corpus median: 41.1°F across 6,861 measured records.
Cooler national band
Annual Precip
38.1"Annual precipitation: 38.1 inches. National station-mapped location corpus median: 36.2 inches across 6,352 measured records.
Wetter than median
Comfort Score
64/100PlainClimate Comfort Score: 64/100. National station-mapped Comfort Score corpus median: 64/100 across 6,189 measured records.
At score median · Good
Climate Living Index · model supports three NOAA data products
Lebanon's broader climate profile: 40/100
A percentile-benchmarked model across annual, daily, and hourly climate normals. This record uses 2 measured NOAA products; every input remains inspectable.
PlainClimate-derived, not an official NOAA rating. This separate index does not replace the established Comfort Score used in rankings, and it is not a verdict on safety, health, housing, culture, or overall quality of life.
-
Annual temperature balance
46.0°F · 21.5° from 67.5°F
23/100 F · weight 25%Distance from a 67.5°F annual mean; smaller is better.
NOAA annual/seasonal normals ·
ANN-TAVG-NORMAL -
Precipitation balance
38.1 in · 3.1 from 35 in
89/100 A · weight 15%Distance from 35 annual inches; smaller is better.
NOAA annual/seasonal normals ·
ANN-PRCP-NORMAL -
Snowfall burden
Not measured
N/A N/A · weight 10%Not scored; its 10% weight redistributes across measured dimensions.
Annual snowfall; lower is better in this formula.
NOAA annual/seasonal normals ·
ANN-SNOW-NORMAL -
Frost-free season
150 days/year
25/100 F · weight 10%Days between NOAA 50% spring and fall freeze dates; longer is better.
NOAA annual/seasonal normals ·
ANN-TMIN-PRBLST-T32FP50 + ANN-TMIN-PRBFST-T32FP50 -
Normal heat + freeze calendar
169 calendar days
33/100 F · weight 25%Normal high ≥90°F days plus normal low ≤32°F days; lower is better.
NOAA daily multivariate normals ·
DLY-TMAX-NORMAL + DLY-TMIN-NORMAL (derived counts) -
Summer moisture balance
Not measured
N/A N/A · weight 15%Not scored; its 15% weight redistributes across measured dimensions.
June–August mean dew point distance from 52.5°F; smaller is better.
NOAA hourly normals ·
HLY-DEWP-NORMAL
Live national benchmark table and calculation
Each raw metric is linearly interpolated across its live p10, p25, p50, p75, and p90 breakpoints. Equal-valued breakpoints collapse to their mean percentile; values outside p10-p90 extrapolate toward 0 or 100 using the nearest non-flat segment, then clamp to that range. Scores favor the direction shown, then combine by the listed weights. Missing dimensions are removed from both the weighted sum and available weight before normalization.
| Dimension | Weight | Better | p10 | p25 | p50 | p75 | p90 | n |
|---|---|---|---|---|---|---|---|---|
| Annual temperature balance | 25% | Lower | 3.4 | 7.9 | 15.3 | 21 | 25.2 | 6,861 |
| Precipitation balance | 15% | Lower | 2.7 | 7.1 | 14.2 | 20.9 | 25.7 | 6,352 |
| Snowfall burden | 10% | Lower | 0 | 2.1 | 18.9 | 42.7 | 69.8 | 4,098 |
| Frost-free season | 10% | Higher | 127 | 150 | 180 | 215 | 253 | 6,446 |
| Normal heat + freeze calendar | 25% | Lower | 56 | 102 | 145 | 180 | 207 | 6,859 |
| Summer moisture balance | 15% | Lower | 2.7 | 6.1 | 9.3 | 14.8 | 18.4 | 417 |
Grades: A 85–100 · B 70–84 · C 55–69 · D 40–54 · F below 40.
Established ranking Comfort Score: 64/100 · inspect its separate fixed-point formula
This legacy score keeps the rankings stable. It uses annual/seasonal normals only; unlike the Climate Living Index above, it is not percentile-scored per dimension.
- Temperature mildness46.0°F annual mean20/40 points
- Precipitation moderation38.1 inches/year30/30 points
- Snow burdenNot measuredN/A · weight removed
- Frost-free season150 days/year4/15 points
54/85 available points → 64/100. Full Comfort Score method.
Source: NOAA NCEI U.S. Climate Normals v1.0.1 (1991–2020). This record uses NOAA annual/seasonal normals and NOAA daily multivariate normals; the model also supports hourly normals where published · data updated 2026-08-04. Full methodology and limits.
How Lebanon compares with its closest stations
Against the 6 closest stations in the record, Lebanon averages 46°F a year, warmer than N Hartland Lake, VT (44°F) and Union Village Dam, VT (44°F), and cooler than Hanover, NH (48°F). On comfort score it places 1 of 6 in that local group.
Corpus-relative placement
Where Lebanon sits across the climate record
These comparisons place this primary-station normal among station-mapped locations with the same NOAA 1991–2020 fields.
- Annual temperature
- Warmer than 23%
- of 6,861 measured location normals.
- Annual precipitation
- Wetter than 54%
- of 6,352 measured location normals.
- Seasonal temperature swing
- Larger than 82%
- of 6,861 complete location-year normals.
How Lebanon compares across U.S. station-mapped locations
Lebanon's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
64 49th percentile score exceeds 49% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). This entry sits in this band.
- 70–80: 650 station-mapped locations (11%). Above this entry.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Lebanon's measured station temperature trend
MethodologyAcross 51 complete annual observations from 1963 to 2025, LEBANON MUNI AP warmed at a fitted rate of 0.35°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Lebanon primary station fitted change +0.35 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|
| January | 30°F (-1°C) | 9°F (-13°C) | 20°F (-7°C) | 2.3" | 29.8 | 0.0 |
| February | 34°F (1°C) | 11°F (-12°C) | 22°F (-5°C) | 2.1" | 27.0 | 0.0 |
| March | 43°F (6°C) | 21°F (-6°C) | 32°F (0°C) | 2.7" | 26.7 | 0.0 |
| April | 57°F (14°C) | 32°F (0°C) | 44°F (7°C) | 3.0" | 16.9 | 0.2 |
| May | 70°F (21°C) | 44°F (7°C) | 57°F (14°C) | 3.3" | 3.3 | 0.5 |
| June | 78°F (26°C) | 52°F (11°C) | 65°F (18°C) | 3.8" | 0.1 | 2.2 |
| July | 83°F (28°C) | 58°F (14°C) | 70°F (21°C) | 4.0" | 0.0 | 4.6 |
| August | 81°F (27°C) | 56°F (13°C) | 69°F (20°C) | 3.6" | 0.0 | 2.3 |
| September | 73°F (23°C) | 49°F (9°C) | 61°F (16°C) | 3.4" | 0.4 | 0.7 |
| October | 60°F (15°C) | 37°F (3°C) | 49°F (9°C) | 4.0" | 10.4 | 0.0 |
| November | 47°F (8°C) | 28°F (-2°C) | 37°F (3°C) | 3.0" | 21.2 | 0.0 |
| December | 36°F (2°C) | 18°F (-8°C) | 27°F (-3°C) | 2.8" | 27.6 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 83°F around July 17, short of 90°F on every date, while 169 dates carry a normal low at or below freezing, the coldest 8°F near January 23.
The freezing stretch
The normal low stays at or below 32°F into April 16, then returns to freezing around October 31, covering 169 dates in all.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is June 25, when 49% of years recorded at least a hundredth of an inch. The driest is January 24 at 34%. Summed across the calendar, that is about 150 wet dates a year.
The widest day
May 4 carries the biggest normal gap between afternoon and dawn, 26°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Lebanon.
Monthly Precipitation
Average monthly rainfall
10.5 days with precipitation
10.3 days with precipitation
10.9 days with precipitation
12.1 days with precipitation
13.9 days with precipitation
14.7 days with precipitation
14.5 days with precipitation
13.6 days with precipitation
12.5 days with precipitation
13.5 days with precipitation
11.4 days with precipitation
12.4 days with precipitation
Lebanon spreads its precipitation across the year
Neither half of the year dominates here: June through August take 30% of the annual total and December through February 19%, with neither reaching the 35% that would mark a distinct wet season. Lebanon has no dry season to plan around, though it does carry a wide 50.5°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: October averages 4.0" and February 2.1". The three wettest months together take 31% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
How Lebanon's precipitation splits across the calendar
About 150 days a year record measurable precipitation here, carrying 38.1" between them, or roughly 0.25 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Frost Dates & Growing Season
First Fall Freeze
October 6
50% probability date
Last Spring Freeze
May 9
50% probability date
Growing Season
150 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,333
Higher = more heating needed
Cooling Degree Days
461
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Places with a similar climate profile
NOAA 1991–2020 annual normals connect this location to non-geographic peers. Temperature peers use annual mean temperature; energy peers use both heating and cooling degree days.
Closest annual-temperature peers
What Lebanon's climate means for you
Lebanon runs 46°F a year - peaking in July, coldest in January.
- Gardeners work an ordinary 150-day frost-free window; the last spring freeze usually lands near May 9, so start dates matter.
- Keeping warm is the dominant household load: 7,333 heating degree days against only 461 for cooling.
- See how Lebanon lines up against the rest of New Hampshire and the national rankings. See rankings
Climate Guides
Data-derived climate profile
How Lebanon's climate pattern fits together
heating led · moderate · mid swing
Lebanon's energy balance leans toward cold weather: 7,333 annual heating degree days against 461 for cooling. Its 50.5°F seasonal range still makes the monthly rows more useful than the annual average alone.
Lebanon's frost-free season lasts about 150 days, a middle-length window whose endpoints matter more than the annual average. It describes freeze probability, not year-specific planting conditions.
July and January mark the typical warm and cold ends of the calendar in Lebanon's middle-range seasonal profile. The measured spread is 50.5°F. The annual average is 46°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Lebanon's 38.1 inches of annual precipitation falls in PlainClimate's middle band, so “wet” or “dry” is not the leading description. Snowfall is not added to the interpretation because its annual value is missing. Temperature balance and the calendar distribution carry more information than the annual moisture label alone.
These labels group NOAA 1991-2020 normals from Lebanon's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. They are descriptive ranges, not an official NOAA classification or a forecast for any specific year.
The year in four calendar signals
- Warmest normal
- July
- Even at its warmest the station only averages 70°F (21°C), so no month here is hot by national standards.
- Coldest normal
- January
- Averaging 20°F (-7°C), this month sits below freezing for the month as a whole, not merely overnight.
- Rainfall rhythm
- October to February
- October is typically wettest; February is driest.
- Mild-temperature window
- May through September
- Monthly means sit between 55°F and 75°F in this window. Freezing days are still reported from January through December.
Frequently Asked Questions
What is the average temperature in Lebanon, NH? ▼
How much rain does Lebanon get? ▼
How cold does Lebanon get in winter? ▼
What is the comfort score for Lebanon? ▼
When is the growing season in Lebanon? ▼
How much energy does heating and cooling require in Lebanon? ▼
Where does this Lebanon climate data come from? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Lebanon's primary station: LEBANON MUNI AP (USW00094765). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 3341300). The reproducible method is an exact normalized name-and-state match; unresolved is an upper bound on facilities because spelling variants can be missed.
Related
Every figure on PlainClimate is rendered directly from NOAA 1991-2020 U.S. Climate Normals data, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.