Saint Johnsbury, VT Climate: Temperature & Rain by Month
Average temperature and precipitation from NOAA NCEI 1991–2020 normals →, with a derived climate comfort score
30-year climate normals (1991-2020) from Saint Johnsbury's primary NOAA station, SAINT JOHNSBURY - 2 stations mapped to the area.
The climate verdict for Saint Johnsbury
Saint Johnsbury, Vermont has a mixed annual climate rather than one dominant extreme. Its NOAA normal shows an annual average of 44°F. At 52/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 24% of scores.
- 44°F
- average temperature, NOAA 1991-2020 normal
- 52/100
- comfort score, above 24% of station-mapped location scores
- 39.3"
- yearly precipitation total
- 146 days
- frost-free growing season
Saint Johnsbury: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00054742 · Saint Johnsbury, VT 44°F mean · 39.3" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-MULTI · BOOK-FULL
- TEMP-COOL 44°F
- RANK-COOL #1,029
- PHOTO-FINISH ≈ Houghton Lake
- PRCP-MID 39.3"
- SWING-WIDE 51°F
- COMF-LOW 52/100
- LOAD-HEAT 7,983 HDD
- STN-MULTI USW00054742
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Houghton Lake, MI (+ 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 VT station list.
- Saint Johnsbury (this station) 44°F
- Cold Hamer, ID 44°F
- Hot Winifred, MT 44°F
- Near Houghton Lake, MI 44°F
- Near Sturgeon Bay, WI 44°F
Climate Living Index · Saint Johnsbury
Saint Johnsbury: 36/100 · grade F
Saint Johnsbury publishes 4 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 2 missing weights rescale to 100.
PlainClimate-derived for Saint Johnsbury, not an official NOAA rating. Rankings still use Comfort Score 52/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Precipitation balance | 39.3 in · 4.3 from 35 in | 84/100 · B |
| Normal heat + freeze calendar | 168 calendar days | 34/100 · F |
| Frost-free season | 146 days/year | 22/100 · F |
| Annual temperature balance | 43.9°F · 23.6° from 67.5°F | 16/100 · F |
Saint Johnsbury · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Saint Johnsbury is a continental Köppen climate: Dfb
Coldest-month mean 17.1°F and warmest-month mean 68.5°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
- 68.5°F
- Coldest month
- 17.1°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 Saint Johnsbury sits across the climate record
Three NOAA fields for Saint Johnsbury's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Cooler than 85%
- Among 6,861 stations, Saint Johnsbury sits in the cooler third of annual means.
- Annual precipitation
- 56th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Wider than 84%
- Warmest-to-coldest month gap for Saint Johnsbury is large versus 6,861 complete station-years.
How Saint Johnsbury compares across U.S. station-mapped locations
Saint Johnsbury's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
52 24th percentile score exceeds 24% 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%). This entry sits in this band.
- 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
Saint Johnsbury's measured station temperature trend
MethodologyAcross 124 complete annual observations from 1854 to 2024, SAINT JOHNSBURY warmed at a fitted rate of 0.12°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Saint Johnsbury primary station fitted change +0.12 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 26°F (-3°C) | 8°F (-13°C) | 17°F (-8°C) | 2.5" | N/A | 30.2 | 0.0 |
| February | 30°F (-1°C) | 9°F (-13°C) | 19°F (-7°C) | 2.2" | N/A | 27.4 | 0.0 |
| March | 39°F (4°C) | 19°F (-7°C) | 29°F (-2°C) | 2.4" | N/A | 27.8 | 0.0 |
| April | 53°F (12°C) | 32°F (0°C) | 43°F (6°C) | 3.3" | N/A | 17.4 | 0.0 |
| May | 67°F (19°C) | 43°F (6°C) | 55°F (13°C) | 3.7" | N/A | 3.4 | 0.2 |
| June | 75°F (24°C) | 53°F (11°C) | 64°F (18°C) | 3.8" | N/A | 0.0 | 1.2 |
| July | 80°F (26°C) | 58°F (14°C) | 69°F (20°C) | 4.4" | N/A | 0.0 | 1.4 |
| August | 78°F (25°C) | 56°F (13°C) | 67°F (19°C) | 3.8" | N/A | 0.0 | 0.8 |
| September | 70°F (21°C) | 48°F (9°C) | 59°F (15°C) | 3.3" | N/A | 0.5 | 0.3 |
| October | 57°F (14°C) | 37°F (3°C) | 47°F (8°C) | 3.9" | N/A | 10.2 | 0.0 |
| November | 43°F (6°C) | 27°F (-3°C) | 35°F (2°C) | 3.0" | N/A | 21.6 | 0.0 |
| December | 32°F (0°C) | 16°F (-9°C) | 24°F (-5°C) | 2.9" | N/A | 28.7 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 80°F around July 14, short of 90°F on every date, while 168 dates carry a normal low at or below freezing, the coldest 6°F near January 26.
The freezing stretch
The normal low stays at or below 32°F into April 16, then returns to freezing around November 1, covering 168 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 December 8, when 50% of years recorded at least a hundredth of an inch. The driest is August 30 at 37%. Summed across the calendar, that is about 164 wet dates a year.
The widest day
May 10 carries the biggest normal gap between afternoon and dawn, 25°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Saint Johnsbury.
Monthly Precipitation
Average monthly rainfall and snowfall
13.0 days with precipitation
13.5 days with precipitation
13.7 days with precipitation
13.7 days with precipitation
13.8 days with precipitation
14.8 days with precipitation
13.7 days with precipitation
12.0 days with precipitation
12.1 days with precipitation
14.5 days with precipitation
13.9 days with precipitation
15.4 days with precipitation
Saint Johnsbury spreads its precipitation across the year
Neither half of the year dominates here: June through August take 31% of the annual total and December through February 19%, with neither reaching the 35% that would mark a distinct wet season. Saint Johnsbury has no dry season to plan around, though it does carry a wide 51.4°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: July averages 4.4" and February 2.2". 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 Saint Johnsbury's precipitation splits across the calendar
About 164 days a year record measurable precipitation here, carrying 39.3" between them, or roughly 0.24 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 3
50% probability date
Last Spring Freeze
May 10
50% probability date
Growing Season
146 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
7,983
Higher = more heating needed
Cooling Degree Days
330
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside VT closest to Saint Johnsbury 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 (44°F here).
- Bethel, ME 44°F · 0.0°F off
- Carter, MT 44°F · 0.0°F off
- Colton, NY 44°F · 0.0°F off
- Dayton, WY 44°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (39.3" here), excluding temperature-peer places.
- Seattle, WA 39.3" · 0.0" off
- Webster, NY 39.3" · 0.0" off
- Crystal Lake, IL 39.4" · 0.0" off
- Elizabeth, IL 39.4" · 0.0" off
Data-derived climate profile
How Saint Johnsbury's climate pattern fits together
heating led · moderate · mid swing
Saint Johnsbury's energy balance leans toward cold weather: 7,983 annual heating degree days against 330 for cooling. Its 51.4°F seasonal range still makes the monthly rows more useful than the annual average alone.
Only about 146 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.
July and January mark the typical warm and cold ends of the calendar in Saint Johnsbury's middle-range seasonal profile. The measured spread is 51.4°F. The annual average is 44°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Saint Johnsbury's 39.3 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 Saint Johnsbury'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. Treat each band as a descriptive range for Saint Johnsbury, not an official NOAA class or a year-ahead forecast.
Questions about Saint Johnsbury's climate
How much rain does Saint Johnsbury get? ▼
How cold does Saint Johnsbury get in winter? ▼
How much energy does heating and cooling require in Saint Johnsbury? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Saint Johnsbury's primary station: SAINT JOHNSBURY (USW00054742). 2 NOAA stations are mapped to the Saint Johnsbury area; the primary station's record is used for consistency. 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 Saint Johnsbury; 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 Saint Johnsbury 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.