Caribou Muni, ME 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 Caribou Muni's primary NOAA station, CARIBOU MUNI AP.
The climate verdict for Caribou Muni
Winter sets the terms in Caribou Muni, Maine. A pronounced 55°F seasonal swing and heating demand above twice the cooling total frame an annual average of 41°F. At 44/100 (moderate) the climate comfort score falls in the bottom third of the station-mapped U.S. score corpus, exceeding only 10% of scores.
- 41°F
- annual average temperature (NOAA normal)
- 44/100
- comfort score, above 10% of station-mapped location scores
- 40.7"
- annual precipitation · 118" snow
- 147 days
- frost-free days per growing season
Caribou Muni: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00014607 · Caribou Muni, ME 41°F mean · 40.7" precip
TEMP-COOL · RANK-COOL · PHOTO-FINISH · PRCP-MID · SWING-WIDE · COMF-LOW · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-COOL 41°F
- RANK-COOL #480
- PHOTO-FINISH ≈ Rice Rsvr Tomah…
- PRCP-MID 40.7"
- SWING-WIDE 55°F
- COMF-LOW 44/100
- LOAD-HEAT 9,048 HDD
- STN-1 USW00014607
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Rice Rsvr Tomahawk-2, WI (+ 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.
- Caribou (this station) 41°F
- Cold Sault Ste Marie, MI 41°F
- Hot Duluth Harbor, MN 41°F
- Near Rice Rsvr Tomah…, WI 41°F
- Near Rudyard, MT 41°F
Caribou Muni 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 · Caribou Muni
Caribou Muni: 37/100 · grade F
Caribou Muni publishes all six Living Index dimensions from NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals.
PlainClimate-derived for Caribou Muni, not an official NOAA rating. Rankings still use Comfort Score 44/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Summer moisture balance | 55.1°F mean dew point | 90/100 · A |
| Precipitation balance | 40.7 in · 5.7 from 35 in | 80/100 · B |
| Normal heat + freeze calendar | 174 calendar days | 29/100 · F |
| Frost-free season | 147 days/year | 23/100 · F |
| Annual temperature balance | 40.7°F · 26.8° from 67.5°F | 6/100 · F |
| Snowfall burden | 118.2 inches/year | 0/100 · F |
Caribou Muni · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Caribou Muni is a continental Köppen climate: Dfb
Coldest-month mean 11.7°F and warmest-month mean 66.7°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
- 66.7°F
- Coldest month
- 11.7°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 Caribou Muni sits across the climate record
Three NOAA fields for Caribou Muni'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, Caribou Muni sits in the cooler third of annual means.
- Annual precipitation
- 60th percentile wetness
- Neither arid nor torrential versus 6,352 station totals.
- Seasonal temperature swing
- Wider than 92%
- Warmest-to-coldest month gap for Caribou Muni is large versus 6,861 complete station-years.
How Caribou Muni compares across U.S. station-mapped locations
Caribou Muni's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
44 10th percentile score exceeds 10% 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%). This entry sits in this band.
- 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
Caribou Muni's measured station temperature trend
MethodologyAcross 82 complete annual observations from 1941 to 2025, CARIBOU MUNI AP warmed at a fitted rate of 0.24°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Caribou Muni primary station fitted change +0.24 °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 | 21°F (-6°C) | 3°F (-16°C) | 12°F (-11°C) | 3.0" | 25.0" | 30.4 | 0.0 |
| February | 24°F (-4°C) | 4°F (-15°C) | 14°F (-10°C) | 2.4" | 25.3" | 27.7 | 0.0 |
| March | 34°F (1°C) | 16°F (-9°C) | 25°F (-4°C) | 2.8" | 21.4" | 29.3 | 0.0 |
| April | 48°F (9°C) | 29°F (-1°C) | 39°F (4°C) | 3.0" | 8.3" | 20.7 | 0.0 |
| May | 63°F (17°C) | 41°F (5°C) | 52°F (11°C) | 3.5" | 0.8" | 3.7 | 0.2 |
| June | 72°F (22°C) | 51°F (10°C) | 61°F (16°C) | 3.9" | 0.0" | 0.1 | 0.5 |
| July | 77°F (25°C) | 56°F (13°C) | 67°F (19°C) | 4.2" | 0.0" | 0.0 | 0.7 |
| August | 76°F (24°C) | 54°F (12°C) | 65°F (18°C) | 3.6" | 0.0" | 0.0 | 0.5 |
| September | 67°F (20°C) | 46°F (8°C) | 57°F (14°C) | 3.4" | 0.1" | 1.7 | 0.1 |
| October | 53°F (12°C) | 36°F (2°C) | 45°F (7°C) | 4.0" | 1.7" | 12.4 | 0.0 |
| November | 40°F (4°C) | 26°F (-4°C) | 33°F (0°C) | 3.4" | 10.4" | 24.0 | 0.0 |
| December | 28°F (-2°C) | 12°F (-11°C) | 20°F (-7°C) | 3.6" | 25.2" | 29.8 | 0.0 |
The year, day by day
Summer here tops out rather than builds: the warmest normal high is 78°F around July 19, short of 90°F on every date, while 174 dates carry a normal low at or below freezing, the coldest 1°F near January 25.
The freezing stretch
The normal low stays at or below 32°F into April 20, then returns to freezing around October 30, covering 174 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 July 8, when 48% of years recorded at least a hundredth of an inch. The driest is September 1 at 39%. Summed across the calendar, that is about 161 wet dates a year.
The widest day
May 28 carries the biggest normal gap between afternoon and dawn, 22°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Caribou Muni.
Where Caribou Muni Stands Nationally
Days and nights track unusually close together; the widest normal swing, about 22°F, is narrower than most stations record.
Caribou Muni earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 25.0"
14.0 days with precipitation
Snow: 25.3"
12.1 days with precipitation
Snow: 21.4"
12.5 days with precipitation
Snow: 8.3"
13.1 days with precipitation
Snow: 0.8"
14.7 days with precipitation
13.8 days with precipitation
14.4 days with precipitation
13.0 days with precipitation
Snow: 0.1"
11.5 days with precipitation
Snow: 1.7"
13.5 days with precipitation
Snow: 10.4"
13.4 days with precipitation
Snow: 25.2"
14.9 days with precipitation
Caribou Muni spreads its precipitation across the year
Neither half of the year dominates here: June through August take 29% of the annual total and December through February 22%, with neither reaching the 35% that would mark a distinct wet season. Caribou Muni has no dry season to plan around, though it does carry a wide 55°F gap between its warmest and coldest month.
The gap between the wettest and driest month still matters: July averages 4.2" and February 2.4". The three wettest months together take 30% 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 Caribou Muni's precipitation splits across the calendar
About 161 days a year record measurable precipitation here, carrying 40.7" 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.
Winter brings real snow to Caribou Muni
Caribou Muni averages 118.2 inches of snowfall a year, with February the snowiest month on the normals, spread across roughly 63 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: 118.2 inches of depth.
- Days recording measurable snow: about 63 a year.
- At a rough ten-to-one melt ratio, snow accounts for on the order of 29% 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
October 1
50% probability date
Last Spring Freeze
May 7
50% probability date
Growing Season
147 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
9,048
Higher = more heating needed
Cooling Degree Days
225
Higher = more cooling needed
Warmest Month
July
Coldest Month
January
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 74% | 7.6 | 45% | 34% |
| February | 70% | 8.6 | 40% | 40% |
| March | 63% | 8.4 | 38% | 41% |
| April | 60% | 8.0 | 38% | 38% |
| May | 66% | 7.2 | 34% | 36% |
| June | 72% | 6.3 | 31% | 29% |
| July | 73% | 5.6 | 39% | 23% |
| August | 74% | 6.2 | 45% | 25% |
| September | 75% | 6.7 | 42% | 34% |
| October | 76% | 7.9 | 30% | 51% |
| November | 80% | 7.7 | 27% | 54% |
| December | 77% | 8.0 | 35% | 47% |
Nationwide similar cities
Other rankable U.S. places outside ME closest to Caribou Muni 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).
- Gordon, WI 41°F · 0.0°F off
- Prentice, WI 41°F · 0.0°F off
- Wilsall, MT 41°F · 0.0°F off
- Morrisville, VT 41°F · 0.1°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (40.7" here), excluding temperature-peer places.
- Cobleskill, NY 40.7" · 0.0" off
- Winchester, VA 40.7" · 0.0" off
- Winfield, KS 40.7" · 0.0" off
- Albany, NY 40.7" · 0.0" off
Snow and freeze rhythm
When cold and snow define Caribou Muni
heating led · moderate · high swing
Winter and seasonal range jointly define this record. Caribou Muni logs 9,048 heating degree days, more than twice its 225 cooling total, while the typical coldest-to-warmest-month gap reaches 55.0°F. The annual mean therefore compresses two materially different seasons.
Only about 147 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. Caribou Muni coldest normal
January
Averaging 12°F (-11°C), this month sits below freezing for the month as a whole, not merely overnight.
-
2. Caribou Muni typical freeze period
January through December
The station reports average freezing days from January through December.
-
3. Caribou Muni snow peak
February
Caribou Muni averages 118.2 inches of snow a year, with February the snowiest month on the normals.
Questions about Caribou Muni's climate
How much snow does Caribou Muni get? ▼
How cold does Caribou Muni get in winter? ▼
How much energy does heating and cooling require in Caribou Muni? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Caribou Muni's primary station: CARIBOU MUNI AP (USW00014607). 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 Caribou Muni; 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 Caribou Muni 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.