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Caribou, Maine climate
Dfb Warm-summer humid continental
Caribou has a strongly seasonal cold-temperate climate (Warm-summer humid continental, Köppen Dfb). The hottest month is July with an average daily high near 77°F, while the coldest is January averaging around 3°F at night. Precipitation is fairly even year-round, totalling about 41 inches. Snowfall is heavy (118 inches of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Caribou climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 21 | 24 | 34 | 48 | 63 | 72 | 77 | 76 | 67 | 53 | 40 | 28 |
| Avg temp (°F) | 12 | 14 | 25 | 39 | 52 | 61 | 67 | 65 | 57 | 45 | 33 | 20 |
| Avg low (°F) | 3 | 4 | 16 | 29 | 41 | 51 | 56 | 54 | 46 | 36 | 26 | 12 |
| Precipitation (in) | 3.0 | 2.4 | 2.8 | 3.0 | 3.5 | 3.9 | 4.2 | 3.6 | 3.4 | 4.0 | 3.4 | 3.6 |
| Snowfall (in) | 25.0 | 25.3 | 21.4 | 8.3 | 0.8 | — | — | — | 0.1 | 1.7 | 10.4 | 25.2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 21 | 24 | 34 | 48 | 63 | 72 |
| Avg temp (°F) | 12 | 14 | 25 | 39 | 52 | 61 |
| Avg low (°F) | 3 | 4 | 16 | 29 | 41 | 51 |
| Precipitation (in) | 3.0 | 2.4 | 2.8 | 3.0 | 3.5 | 3.9 |
| Snowfall (in) | 25.0 | 25.3 | 21.4 | 8.3 | 0.8 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 77 | 76 | 67 | 53 | 40 | 28 |
| Avg temp (°F) | 67 | 65 | 57 | 45 | 33 | 20 |
| Avg low (°F) | 56 | 54 | 46 | 36 | 26 | 12 |
| Precipitation (in) | 4.2 | 3.6 | 3.4 | 4.0 | 3.4 | 3.6 |
| Snowfall (in) | — | — | 0.1 | 1.7 | 10.4 | 25.2 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 12 | 13 | 13 | 15 | 14 | 14 | 13 | 12 | 14 | 13 | 15 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.2 | 0.5 | 0.7 | 0.5 | 0.1 | — | — | — |
| Days with low ≤ 32°F (days) | 30 | 28 | 29 | 21 | 4 | 0.1 | — | — | 2 | 12 | 24 | 30 |
| Days with snowfall ≥ 1 in (days) | 7 | 6 | 5 | 3 | 0.2 | — | — | — | 0.0 | 0.4 | 3 | 6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 12 | 13 | 13 | 15 | 14 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.2 | 0.5 |
| Days with low ≤ 32°F (days) | 30 | 28 | 29 | 21 | 4 | 0.1 |
| Days with snowfall ≥ 1 in (days) | 7 | 6 | 5 | 3 | 0.2 | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 14 | 13 | 12 | 14 | 13 | 15 |
| Days with high ≥ 90°F (days) | 0.7 | 0.5 | 0.1 | — | — | — |
| Days with low ≤ 32°F (days) | — | — | 2 | 12 | 24 | 30 |
| Days with snowfall ≥ 1 in (days) | — | — | 0.0 | 0.4 | 3 | 6 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 64 | 64 | 66 | 71 | 68 | 64 | 61 | 61 | 69 | 72 | 69 |
| Relative humidity (%) | 97 | 96 | 94 | 85 | 81 | 82 | 84 | 84 | 84 | 86 | 89 | 95 |
| Wind speed (mph) | 3.5 | 4.0 | 3.9 | 3.3 | 2.5 | 2.1 | 1.9 | 1.8 | 2.0 | 2.2 | 2.5 | 2.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 64 | 64 | 66 | 71 | 68 |
| Relative humidity (%) | 97 | 96 | 94 | 85 | 81 | 82 |
| Wind speed (mph) | 3.5 | 4.0 | 3.9 | 3.3 | 2.5 | 2.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 61 | 61 | 69 | 72 | 69 |
| Relative humidity (%) | 84 | 84 | 84 | 86 | 89 | 95 |
| Wind speed (mph) | 1.9 | 1.8 | 2.0 | 2.2 | 2.5 | 2.9 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Caribou Wfo (NOAA GHCN station USW00014607), about 1 km from the city centre.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.