Andover, ME Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Andover's primary NOAA station, ANDOVER 2.
The climate verdict for Andover
Water is the standout signal in Andover, Maine: 51.6 inches of precipitation in a normal year. Against that wet profile, NOAA records an annual average of 41°F. At 34/100 (below average) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 2% of scores.
- 41°F
- average temperature, NOAA 1991-2020 normal
- 34/100
- comfort score, above 2% of station-mapped location scores
- 51.6"
- annual precipitation · 112" snow
- 129 days
- growing season, frost-free days
Andover: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00170217 · Andover, ME 41°F mean · 51.6" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-WET · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 41°F
- RANK-COOL #480
- PHOTO-FINISH ≈ Newcomb
- PRCP-WET 51.6"
- SWING-WIDE 52°F
- COMF-LOW 34/100
- LOAD-HEAT 8,940 HDD
- STN-1 USC00170217
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Newcomb, NY (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every ME station list.
- Andover (this station) 41°F
- Hot Danforth, ME 41°F
- Near Newcomb, NY 41°F
- Near Munising, MI 41°F
- Near Highmarket, NY 41°F
Andover sits in Maine, the #4 coldest U.S. state at 43.1°F statewide annual average - see all 50 coldest states ranked by NOAA normals
Climate Living Index · Andover
Andover: 16/100 · grade F
Andover publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Andover, not an official NOAA rating. Rankings still use Comfort Score 34/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 51.6 in · 16.6 from 35 in | 41/100 · D |
| Normal heat + freeze calendar | 190 calendar days | 19/100 · F |
| Frost-free season | 129 days/year | 11/100 · F |
| Annual temperature balance | 40.8°F · 26.7° from 67.5°F | 6/100 · F |
| Snowfall burden | 111.8 inches/year | 0/100 · F |
Andover · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Andover is a continental Köppen climate: Dfb
Coldest-month mean 14.0°F and warmest-month mean 65.6°F place this station in continental, no dry season, warm summer climates (Dfb). Class Dfb is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: continental, specifically continental, no dry season, warm summer.
- Köppen code
- Dfb
- Group
- Continental
- Warmest month
- 65.6°F
- Coldest month
- 14.0°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · heating-led station
Where Andover sits across the climate record
Three NOAA fields for Andover's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 93%
- Among 6,861 stations, Andover sits in the cooler third of annual means.
- Annual precipitation
- Top 16% wettest
- Andover's annual total ranks in the wetter third of 6,352 measured normals.
- Seasonal temperature swing
- Wider than 85%
- Warmest-to-coldest month gap for Andover is large versus 6,861 complete station-years.
How Andover compares across U.S. station-mapped locations
Andover's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
34 2nd percentile score exceeds 2% 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%). This entry sits in this band.
- 40–50: 1,113 station-mapped locations (18%). Above this entry.
- 50–60: 1,329 station-mapped locations (21%). Above this entry.
- 60–70: 1,236 station-mapped locations (20%). Above this entry.
- 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
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 24°F (-4°C) | 4°F (-16°C) | 14°F (-10°C) | 3.4" | 22.5" | 30.9 | 0.0 |
| February | 28°F (-2°C) | 4°F (-16°C) | 16°F (-9°C) | 2.7" | 26.5" | 28.0 | 0.0 |
| March | 37°F (3°C) | 15°F (-10°C) | 26°F (-4°C) | 3.5" | 17.6" | 30.7 | 0.0 |
| April | 50°F (10°C) | 27°F (-3°C) | 38°F (4°C) | 4.5" | 7.0" | 24.1 | 0.0 |
| May | 64°F (18°C) | 39°F (4°C) | 52°F (11°C) | 4.4" | 0.2" | 5.4 | 0.2 |
| June | 72°F (22°C) | 49°F (9°C) | 60°F (16°C) | 5.4" | 0.0" | 0.0 | 0.1 |
| July | 77°F (25°C) | 54°F (12°C) | 66°F (19°C) | 4.8" | 0.0" | 0.0 | 1.6 |
| August | 77°F (25°C) | 51°F (11°C) | 64°F (18°C) | 4.3" | 0.0" | 0.0 | 0.1 |
| September | 69°F (20°C) | 44°F (7°C) | 56°F (13°C) | 4.0" | 0.0" | 2.7 | 0.1 |
| October | 55°F (13°C) | 33°F (1°C) | 44°F (7°C) | 5.9" | 0.6" | 12.6 | 0.0 |
| November | 42°F (6°C) | 24°F (-4°C) | 33°F (1°C) | 4.5" | 8.3" | 25.3 | 0.0 |
| December | 30°F (-1°C) | 13°F (-11°C) | 21°F (-6°C) | 4.3" | 29.1" | 30.4 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 78°F around July 18, short of 90°F on every date, while 190 dates carry a normal low at or below freezing, the coldest 1°F near January 30.
The freezing stretch
The normal low stays at or below 32°F into April 27, then returns to freezing around October 21, covering 190 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 6, when 48% of years recorded at least a hundredth of an inch. The driest is March 20 at 30%. Summed across the calendar, that is about 141 wet dates a year.
The widest day
August 25 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 Andover.
Where Andover Stands Nationally
Freezing is routine here by normals standards — the normal low reaches 32°F or colder on about 190 nights a year, more than most ranked stations.
The normal water year runs well above the national norm at roughly 52 inches.
Andover earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 22.5"
11.2 days with precipitation
Snow: 26.5"
9.4 days with precipitation
Snow: 17.6"
9.1 days with precipitation
Snow: 7.0"
11.3 days with precipitation
Snow: 0.2"
14.3 days with precipitation
14.7 days with precipitation
11.8 days with precipitation
12.1 days with precipitation
9.0 days with precipitation
Snow: 0.6"
13.0 days with precipitation
Snow: 8.3"
11.4 days with precipitation
Snow: 29.1"
13.5 days with precipitation
Andover spreads its precipitation across the year
Neither half of the year dominates here: June through August take 28% of the annual total and December through February 20%, with neither reaching the 35% that would mark a distinct wet season. Andover has no dry season to plan around, though it does carry a wide 51.6°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: October averages 5.9" and February 2.7". 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.
When it rains in Andover, it arrives in quantity
51.6" of precipitation falls across only about 141 wet days here, averaging 0.37 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 141 a year, 39% of all days
- Average depth per wet day
- 0.37 inches
- Most wet days
- June, about 15
- Fewest wet days
- September, about 9
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Winter brings real snow to Andover
Andover averages 111.8 inches of snowfall a year, with December the snowiest month on the normals, spread across roughly 40 days that record measurable snow. That is depth accumulating on the ground, which is why it can exceed the annual precipitation figure: precipitation counts the liquid the snow melts down to, and fresh snow is mostly air.
- Annual snowfall: 111.8 inches of depth.
- Days recording measurable snow: about 40 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 22% of the year's precipitation.
NOAA 1991-2020 normals. The ten-to-one ratio is a convention, not a measurement: real ratios vary with temperature, so treat the share as an order of magnitude rather than an exact split.
Frost Dates & Growing Season
First Fall Freeze
September 25
50% probability date
Last Spring Freeze
May 19
50% probability date
Growing Season
129 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
8,940
Higher = more heating needed
Cooling Degree Days
168
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside ME closest to Andover on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (41°F here).
- Morrisville, VT 41°F · 0.0°F off
- Steamboat Springs, CO 41°F · 0.0°F off
- Underwood, ND 41°F · 0.0°F off
- Gordon, WI 41°F · 0.1°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (51.6" here), excluding temperature-peer places.
- Wise, VA 51.6" · 0.0" off
- Belington, WV 51.6" · 0.0" off
- Booneville, AR 51.6" · 0.0" off
- Camden, TN 51.6" · 0.0" off
Snow and freeze rhythm
When cold and snow define Andover
heating led · wet · mid swing
Andover's energy balance leans toward cold weather: 8,940 annual heating degree days against 168 for cooling. Its 51.6°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 129 days are frost-free in a normal year. That short interval is consistent with the cold-season signal, but the measure does not predict the exact first or last freeze in any one year.
-
1. Andover coldest normal
January
Averaging 14°F (-10°C), this month sits below freezing for the month as a whole, not merely overnight.
-
2. Andover typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Andover snow peak
December
Andover averages 111.8 inches of snow a year, with December the snowiest month on the normals.
Questions about Andover's climate
How much snow does Andover get? ▼
How cold does Andover get in winter? ▼
How much energy does heating and cooling require in Andover? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Andover's primary station: ANDOVER 2 (USC00170217). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Andover; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Andover comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.