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Gloucester, Massachusetts climate
Cfa Humid subtropical
Gloucester has a strongly seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 84°F, while the coldest is January averaging around 19°F at night. Precipitation is fairly even year-round, totalling about 50 inches. Snowfall is heavy (64 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 figuresClear vs cloudy days
Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day countsGloucester climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 38 | 40 | 48 | 60 | 70 | 78 | 84 | 82 | 75 | 64 | 53 | 43 |
| Avg temp (°F) | 28 | 30 | 37 | 48 | 58 | 67 | 73 | 72 | 64 | 53 | 43 | 34 |
| Avg low (°F) | 19 | 20 | 27 | 37 | 47 | 56 | 63 | 61 | 53 | 42 | 32 | 24 |
| Precipitation (in) | 3.9 | 3.6 | 4.9 | 4.3 | 3.8 | 4.2 | 4.0 | 3.5 | 3.9 | 4.8 | 4.0 | 5.0 |
| Snowfall (in) | 17.2 | 16.2 | 13.3 | 2.2 | — | — | — | — | — | 0.1 | 1.7 | 12.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 38 | 40 | 48 | 60 | 70 | 78 |
| Avg temp (°F) | 28 | 30 | 37 | 48 | 58 | 67 |
| Avg low (°F) | 19 | 20 | 27 | 37 | 47 | 56 |
| Precipitation (in) | 3.9 | 3.6 | 4.9 | 4.3 | 3.8 | 4.2 |
| Snowfall (in) | 17.2 | 16.2 | 13.3 | 2.2 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 84 | 82 | 75 | 64 | 53 | 43 |
| Avg temp (°F) | 73 | 72 | 64 | 53 | 43 | 34 |
| Avg low (°F) | 63 | 61 | 53 | 42 | 32 | 24 |
| Precipitation (in) | 4.0 | 3.5 | 3.9 | 4.8 | 4.0 | 5.0 |
| Snowfall (in) | — | — | — | 0.1 | 1.7 | 12.8 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 12 | 10 | 13 | 13 | 13 | 12 | 10 | 9 | 9 | 11 | 11 | 12 |
| Days with high ≥ 90°F (days) | — | — | 0.0 | 0.2 | 0.7 | 2 | 5 | 3 | 0.9 | — | — | — |
| Days with low ≤ 32°F (days) | 28 | 25 | 24 | 10 | 0.5 | — | — | — | 0.1 | 4 | 16 | 26 |
| Days with snowfall ≥ 1 in (days) | 4 | 3 | 3 | 0.7 | — | — | — | — | — | 0.2 | 0.4 | 3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 12 | 10 | 13 | 13 | 13 | 12 |
| Days with high ≥ 90°F (days) | — | — | 0.0 | 0.2 | 0.7 | 2 |
| Days with low ≤ 32°F (days) | 28 | 25 | 24 | 10 | 0.5 | — |
| Days with snowfall ≥ 1 in (days) | 4 | 3 | 3 | 0.7 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 9 | 9 | 11 | 11 | 12 |
| Days with high ≥ 90°F (days) | 5 | 3 | 0.9 | — | — | — |
| Days with low ≤ 32°F (days) | — | — | 0.1 | 4 | 16 | 26 |
| Days with snowfall ≥ 1 in (days) | — | — | — | 0.2 | 0.4 | 3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 62 | 62 | 64 | 65 | 63 | 57 | 56 | 55 | 60 | 62 | 63 |
| Clear days (≤ 30% cloud) | 5 | 5 | 6 | 5 | 5 | 5 | 6 | 7 | 9 | 7 | 6 | 5 |
| Partly cloudy days (30–70%) | 11 | 11 | 10 | 10 | 10 | 11 | 14 | 12 | 10 | 10 | 10 | 12 |
| Cloudy days (≥ 70%) | 14 | 13 | 14 | 15 | 16 | 14 | 11 | 12 | 11 | 14 | 14 | 14 |
| Relative humidity (%) | 88 | 87 | 83 | 80 | 79 | 79 | 74 | 73 | 74 | 78 | 82 | 86 |
| Wind speed (mph) | 2.3 | 2.6 | 2.3 | 1.4 | 1.0 | 0.9 | 0.8 | 0.9 | 1.1 | 1.4 | 1.5 | 1.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 63 | 62 | 62 | 64 | 65 | 63 |
| Clear days (≤ 30% cloud) | 5 | 5 | 6 | 5 | 5 | 5 |
| Partly cloudy days (30–70%) | 11 | 11 | 10 | 10 | 10 | 11 |
| Cloudy days (≥ 70%) | 14 | 13 | 14 | 15 | 16 | 14 |
| Relative humidity (%) | 88 | 87 | 83 | 80 | 79 | 79 |
| Wind speed (mph) | 2.3 | 2.6 | 2.3 | 1.4 | 1.0 | 0.9 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 57 | 56 | 55 | 60 | 62 | 63 |
| Clear days (≤ 30% cloud) | 6 | 7 | 9 | 7 | 6 | 5 |
| Partly cloudy days (30–70%) | 14 | 12 | 10 | 10 | 10 | 12 |
| Cloudy days (≥ 70%) | 11 | 12 | 11 | 14 | 14 | 14 |
| Relative humidity (%) | 74 | 73 | 74 | 78 | 82 | 86 |
| Wind speed (mph) | 0.8 | 0.9 | 1.1 | 1.4 | 1.5 | 1.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Reading (NOAA GHCN station USC00196783), about 39 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.