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Farmington, Connecticut climate
Cfa Humid subtropical
Farmington has a strongly seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 29°C, while the coldest is January averaging around −7°C at night. Precipitation is fairly even year-round, totalling about 1280 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsFarmington climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 3 | 5 | 9 | 16 | 22 | 26 | 29 | 29 | 25 | 18 | 11 | 6 |
| Avg temp (°C) | −2 | 0 | 4 | 10 | 15 | 20 | 23 | 23 | 19 | 12 | 6 | 1 |
| Avg low (°C) | −7 | −6 | −2 | 3 | 9 | 14 | 18 | 17 | 13 | 6 | 1 | −3 |
| Precipitation (mm) | 91 | 88 | 113 | 118 | 93 | 124 | 97 | 96 | 110 | 125 | 110 | 115 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 3 | 5 | 9 | 16 | 22 | 26 |
| Avg temp (°C) | −2 | 0 | 4 | 10 | 15 | 20 |
| Avg low (°C) | −7 | −6 | −2 | 3 | 9 | 14 |
| Precipitation (mm) | 91 | 88 | 113 | 118 | 93 | 124 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 25 | 18 | 11 | 6 |
| Avg temp (°C) | 23 | 23 | 19 | 12 | 6 | 1 |
| Avg low (°C) | 18 | 17 | 13 | 6 | 1 | −3 |
| Precipitation (mm) | 97 | 96 | 110 | 125 | 110 | 115 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 7 | 9 | 9 | 10 | 8 | 8 | 7 | 7 | 8 | 8 | 9 |
| Days with high ≥ 32°C (days) | — | — | — | 0.1 | 0.6 | 2 | 4 | 3 | 0.6 | — | — | — |
| Days with low ≤ 0°C (days) | 23 | 22 | 19 | 5 | 0.3 | — | — | — | 0.1 | 4 | 12 | 23 |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 2 | 2 | 0.2 | — | — | 0.0 | — | — | — | 0.2 | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 7 | 9 | 9 | 10 | 8 |
| Days with high ≥ 32°C (days) | — | — | — | 0.1 | 0.6 | 2 |
| Days with low ≤ 0°C (days) | 23 | 22 | 19 | 5 | 0.3 | — |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 2 | 2 | 0.2 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 7 | 7 | 8 | 8 | 9 |
| Days with high ≥ 32°C (days) | 4 | 3 | 0.6 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.1 | 4 | 12 | 23 |
| Days with snowfall ≥ 2.5 cm (days) | 0.0 | — | — | — | 0.2 | 2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 61 | 62 | 63 | 63 | 61 | 57 | 54 | 53 | 57 | 61 | 63 |
| Clear days (≤ 30% cloud) | 5 | 6 | 6 | 6 | 5 | 5 | 7 | 8 | 9 | 8 | 6 | 5 |
| Partly cloudy days (30–70%) | 12 | 10 | 11 | 10 | 12 | 12 | 13 | 12 | 10 | 10 | 10 | 12 |
| Cloudy days (≥ 70%) | 14 | 13 | 14 | 14 | 15 | 13 | 11 | 11 | 11 | 13 | 14 | 14 |
| Relative humidity (%) | 88 | 87 | 83 | 78 | 78 | 77 | 73 | 73 | 74 | 77 | 81 | 86 |
| Wind speed (mph) | 1.4 | 1.7 | 1.3 | 0.5 | 0.3 | 0.2 | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 64 | 61 | 62 | 63 | 63 | 61 |
| Clear days (≤ 30% cloud) | 5 | 6 | 6 | 6 | 5 | 5 |
| Partly cloudy days (30–70%) | 12 | 10 | 11 | 10 | 12 | 12 |
| Cloudy days (≥ 70%) | 14 | 13 | 14 | 14 | 15 | 13 |
| Relative humidity (%) | 88 | 87 | 83 | 78 | 78 | 77 |
| Wind speed (mph) | 1.4 | 1.7 | 1.3 | 0.5 | 0.3 | 0.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 57 | 54 | 53 | 57 | 61 | 63 |
| Clear days (≤ 30% cloud) | 7 | 8 | 9 | 8 | 6 | 5 |
| Partly cloudy days (30–70%) | 13 | 12 | 10 | 10 | 10 | 12 |
| Cloudy days (≥ 70%) | 11 | 11 | 11 | 13 | 14 | 14 |
| Relative humidity (%) | 73 | 73 | 74 | 77 | 81 | 86 |
| Wind speed (mph) | 0.3 | 0.3 | 0.4 | 0.4 | 0.4 | 0.8 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at MT Carmel (NOAA GHCN station USC00065077), about 35 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.