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Watertown, New York climate
Dfb Warm-summer humid continental
Watertown has a strongly seasonal cool-temperate climate (Warm-summer humid continental, Köppen Dfb). The hottest month is July with an average daily high near 80°F, while the coldest is January averaging around 11°F at night. Precipitation is fairly even year-round, totalling about 44 inches. Snowfall is heavy (116 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 countsWatertown climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 29 | 31 | 40 | 54 | 67 | 75 | 80 | 79 | 72 | 59 | 46 | 35 |
| Avg temp (°F) | 20 | 21 | 31 | 44 | 57 | 66 | 71 | 70 | 62 | 50 | 38 | 27 |
| Avg low (°F) | 11 | 12 | 22 | 35 | 47 | 57 | 62 | 61 | 52 | 41 | 31 | 20 |
| Precipitation (in) | 3.6 | 2.9 | 2.8 | 3.5 | 3.7 | 3.7 | 3.5 | 3.8 | 3.9 | 5.0 | 4.2 | 3.9 |
| Snowfall (in) | 34.0 | 29.6 | 13.6 | 2.7 | — | — | — | — | — | 0.5 | 9.1 | 26.9 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 29 | 31 | 40 | 54 | 67 | 75 |
| Avg temp (°F) | 20 | 21 | 31 | 44 | 57 | 66 |
| Avg low (°F) | 11 | 12 | 22 | 35 | 47 | 57 |
| Precipitation (in) | 3.6 | 2.9 | 2.8 | 3.5 | 3.7 | 3.7 |
| Snowfall (in) | 34.0 | 29.6 | 13.6 | 2.7 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 80 | 79 | 72 | 59 | 46 | 35 |
| Avg temp (°F) | 71 | 70 | 62 | 50 | 38 | 27 |
| Avg low (°F) | 62 | 61 | 52 | 41 | 31 | 20 |
| Precipitation (in) | 3.5 | 3.8 | 3.9 | 5.0 | 4.2 | 3.9 |
| Snowfall (in) | — | — | — | 0.5 | 9.1 | 26.9 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 17 | 15 | 13 | 14 | 14 | 13 | 11 | 11 | 12 | 16 | 15 | 17 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.0 | 0.7 | 1 | 1 | 0.3 | — | — | — |
| Days with low ≤ 32°F (days) | 28 | 27 | 25 | 13 | 1 | — | — | — | 0.2 | 6 | 17 | 26 |
| Days with snowfall ≥ 1 in (days) | 9 | 8 | 4 | 0.9 | — | — | — | — | — | 0.1 | 3 | 7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 17 | 15 | 13 | 14 | 14 | 13 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.0 | 0.7 |
| Days with low ≤ 32°F (days) | 28 | 27 | 25 | 13 | 1 | — |
| Days with snowfall ≥ 1 in (days) | 9 | 8 | 4 | 0.9 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 11 | 12 | 16 | 15 | 17 |
| Days with high ≥ 90°F (days) | 1 | 1 | 0.3 | — | — | — |
| Days with low ≤ 32°F (days) | — | — | 0.2 | 6 | 17 | 26 |
| Days with snowfall ≥ 1 in (days) | — | — | — | 0.1 | 3 | 7 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 78 | 74 | 70 | 70 | 67 | 64 | 59 | 59 | 59 | 71 | 77 | 80 |
| Clear days (≤ 30% cloud) | 1 | 2 | 4 | 4 | 4 | 4 | 6 | 6 | 7 | 4 | 2 | 1 |
| Partly cloudy days (30–70%) | 8 | 7 | 9 | 8 | 10 | 12 | 13 | 12 | 10 | 9 | 6 | 6 |
| Cloudy days (≥ 70%) | 22 | 19 | 18 | 18 | 17 | 14 | 12 | 13 | 13 | 19 | 21 | 23 |
| Relative humidity (%) | 93 | 92 | 86 | 80 | 79 | 80 | 80 | 78 | 78 | 81 | 85 | 91 |
| Wind speed (mph) | 3.4 | 3.9 | 2.7 | 1.2 | 0.5 | 0.5 | 0.6 | 0.7 | 0.7 | 0.8 | 1.0 | 2.0 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 78 | 74 | 70 | 70 | 67 | 64 |
| Clear days (≤ 30% cloud) | 1 | 2 | 4 | 4 | 4 | 4 |
| Partly cloudy days (30–70%) | 8 | 7 | 9 | 8 | 10 | 12 |
| Cloudy days (≥ 70%) | 22 | 19 | 18 | 18 | 17 | 14 |
| Relative humidity (%) | 93 | 92 | 86 | 80 | 79 | 80 |
| Wind speed (mph) | 3.4 | 3.9 | 2.7 | 1.2 | 0.5 | 0.5 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 59 | 59 | 71 | 77 | 80 |
| Clear days (≤ 30% cloud) | 6 | 6 | 7 | 4 | 2 | 1 |
| Partly cloudy days (30–70%) | 13 | 12 | 10 | 9 | 6 | 6 |
| Cloudy days (≥ 70%) | 12 | 13 | 13 | 19 | 21 | 23 |
| Relative humidity (%) | 80 | 78 | 78 | 81 | 85 | 91 |
| Wind speed (mph) | 0.6 | 0.7 | 0.7 | 0.8 | 1.0 | 2.0 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Watertown (NOAA GHCN station USC00309000), about 3 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.