Home › Cities › United States › Massachusetts › Weymouth
Weymouth, Massachusetts climate
Cfa Humid subtropical
Weymouth has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 83°F, while the coldest is January averaging around 22°F at night. Precipitation is fairly even year-round, totalling about 52 inches. Winters bring significant snowfall (51 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 countsWeymouth climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 38 | 40 | 47 | 58 | 69 | 77 | 83 | 82 | 74 | 63 | 52 | 43 |
| Avg temp (°F) | 30 | 32 | 38 | 48 | 58 | 67 | 73 | 72 | 65 | 54 | 44 | 35 |
| Avg low (°F) | 22 | 23 | 29 | 38 | 48 | 57 | 63 | 62 | 55 | 44 | 35 | 27 |
| Precipitation (in) | 4.5 | 4.0 | 5.4 | 4.6 | 3.8 | 4.0 | 3.6 | 3.8 | 3.9 | 5.2 | 4.4 | 5.1 |
| Snowfall (in) | 14.8 | 14.5 | 10.3 | 1.7 | — | — | — | — | — | 0.1 | 0.7 | 8.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 38 | 40 | 47 | 58 | 69 | 77 |
| Avg temp (°F) | 30 | 32 | 38 | 48 | 58 | 67 |
| Avg low (°F) | 22 | 23 | 29 | 38 | 48 | 57 |
| Precipitation (in) | 4.5 | 4.0 | 5.4 | 4.6 | 3.8 | 4.0 |
| Snowfall (in) | 14.8 | 14.5 | 10.3 | 1.7 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 83 | 82 | 74 | 63 | 52 | 43 |
| Avg temp (°F) | 73 | 72 | 65 | 54 | 44 | 35 |
| Avg low (°F) | 63 | 62 | 55 | 44 | 35 | 27 |
| Precipitation (in) | 3.6 | 3.8 | 3.9 | 5.2 | 4.4 | 5.1 |
| Snowfall (in) | — | — | — | 0.1 | 0.7 | 8.8 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 11 | 12 | 12 | 13 | 11 | 10 | 9 | 9 | 11 | 11 | 12 |
| Days with high ≥ 90°F (days) | — | — | — | 0.1 | 0.8 | 2 | 6 | 4 | 0.7 | — | — | — |
| Days with low ≤ 32°F (days) | 26 | 24 | 20 | 7 | 0.4 | — | — | — | — | 2 | 13 | 23 |
| Days with snowfall ≥ 1 in (days) | 3 | 3 | 2 | 0.3 | — | — | — | — | — | 0.0 | 0.2 | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 13 | 11 | 12 | 12 | 13 | 11 |
| Days with high ≥ 90°F (days) | — | — | — | 0.1 | 0.8 | 2 |
| Days with low ≤ 32°F (days) | 26 | 24 | 20 | 7 | 0.4 | — |
| Days with snowfall ≥ 1 in (days) | 3 | 3 | 2 | 0.3 | — | — |
| 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) | 6 | 4 | 0.7 | — | — | — |
| Days with low ≤ 32°F (days) | — | — | — | 2 | 13 | 23 |
| Days with snowfall ≥ 1 in (days) | — | — | — | 0.0 | 0.2 | 2 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 66 | 64 | 62 | 64 | 61 | 55 | 51 | 52 | 57 | 65 | 68 |
| Clear days (≤ 30% cloud) | 3 | 4 | 5 | 6 | 5 | 6 | 7 | 9 | 10 | 8 | 5 | 4 |
| Partly cloudy days (30–70%) | 11 | 10 | 11 | 10 | 11 | 11 | 13 | 12 | 9 | 11 | 10 | 11 |
| Cloudy days (≥ 70%) | 17 | 14 | 15 | 14 | 15 | 13 | 11 | 10 | 11 | 13 | 15 | 16 |
| Relative humidity (%) | 85 | 83 | 82 | 82 | 82 | 82 | 78 | 78 | 78 | 79 | 81 | 83 |
| Wind speed (mph) | 8.1 | 8.0 | 7.5 | 6.0 | 5.0 | 4.5 | 4.2 | 4.4 | 5.3 | 6.4 | 7.0 | 7.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 69 | 66 | 64 | 62 | 64 | 61 |
| Clear days (≤ 30% cloud) | 3 | 4 | 5 | 6 | 5 | 6 |
| Partly cloudy days (30–70%) | 11 | 10 | 11 | 10 | 11 | 11 |
| Cloudy days (≥ 70%) | 17 | 14 | 15 | 14 | 15 | 13 |
| Relative humidity (%) | 85 | 83 | 82 | 82 | 82 | 82 |
| Wind speed (mph) | 8.1 | 8.0 | 7.5 | 6.0 | 5.0 | 4.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 55 | 51 | 52 | 57 | 65 | 68 |
| Clear days (≤ 30% cloud) | 7 | 9 | 10 | 8 | 5 | 4 |
| Partly cloudy days (30–70%) | 13 | 12 | 9 | 11 | 10 | 11 |
| Cloudy days (≥ 70%) | 11 | 10 | 11 | 13 | 15 | 16 |
| Relative humidity (%) | 78 | 78 | 78 | 79 | 81 | 83 |
| Wind speed (mph) | 4.2 | 4.4 | 5.3 | 6.4 | 7.0 | 7.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Hingham (NOAA GHCN station USC00193624), about 2 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.