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North Tonawanda, New York climate
Dfa Hot-summer humid continental
North Tonawanda has a strongly seasonal cool-temperate climate (Hot-summer humid continental, Köppen Dfa). The hottest month is July with an average daily high near 27°C, while the coldest is January averaging around −7°C at night. Precipitation is fairly even year-round, totalling about 1033 mm. Snowfall is heavy (242 cm 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 countsNorth Tonawanda climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 0 | 1 | 5 | 13 | 20 | 24 | 27 | 26 | 22 | 15 | 9 | 3 |
| Avg temp (°C) | −4 | −3 | 1 | 8 | 14 | 19 | 22 | 21 | 17 | 11 | 5 | 0 |
| Avg low (°C) | −7 | −7 | −3 | 3 | 9 | 15 | 17 | 17 | 13 | 7 | 1 | −4 |
| Precipitation (mm) | 85 | 63 | 73 | 86 | 86 | 86 | 82 | 82 | 104 | 102 | 89 | 95 |
| Snowfall (cm) | 68 | 46 | 36 | 6 | — | — | — | — | — | 2 | 20 | 64 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 0 | 1 | 5 | 13 | 20 | 24 |
| Avg temp (°C) | −4 | −3 | 1 | 8 | 14 | 19 |
| Avg low (°C) | −7 | −7 | −3 | 3 | 9 | 15 |
| Precipitation (mm) | 85 | 63 | 73 | 86 | 86 | 86 |
| Snowfall (cm) | 68 | 46 | 36 | 6 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 27 | 26 | 22 | 15 | 9 | 3 |
| Avg temp (°C) | 22 | 21 | 17 | 11 | 5 | 0 |
| Avg low (°C) | 17 | 17 | 13 | 7 | 1 | −4 |
| Precipitation (mm) | 82 | 82 | 104 | 102 | 89 | 95 |
| Snowfall (cm) | — | — | — | 2 | 20 | 64 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 19 | 16 | 15 | 13 | 13 | 12 | 11 | 10 | 11 | 14 | 14 | 18 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.2 | 0.7 | 2 | 0.7 | 0.3 | — | — | — |
| Days with low ≤ 0°C (days) | 27 | 26 | 23 | 9 | 0.2 | — | — | — | 0.0 | 2 | 13 | 24 |
| Days with snowfall ≥ 2.5 cm (days) | 8 | 6 | 4 | 0.8 | — | — | — | — | — | 0.1 | 2 | 6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 19 | 16 | 15 | 13 | 13 | 12 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.2 | 0.7 |
| Days with low ≤ 0°C (days) | 27 | 26 | 23 | 9 | 0.2 | — |
| Days with snowfall ≥ 2.5 cm (days) | 8 | 6 | 4 | 0.8 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 10 | 11 | 14 | 14 | 18 |
| Days with high ≥ 32°C (days) | 2 | 0.7 | 0.3 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.0 | 2 | 13 | 24 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | 0.1 | 2 | 6 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 77 | 74 | 71 | 67 | 63 | 59 | 59 | 61 | 70 | 77 | 81 |
| Clear days (≤ 30% cloud) | 1 | 2 | 3 | 4 | 4 | 5 | 5 | 6 | 6 | 5 | 2 | 1 |
| Partly cloudy days (30–70%) | 6 | 7 | 9 | 8 | 10 | 11 | 14 | 14 | 10 | 8 | 7 | 6 |
| Cloudy days (≥ 70%) | 24 | 20 | 20 | 18 | 16 | 14 | 12 | 12 | 14 | 19 | 21 | 24 |
| Relative humidity (%) | 89 | 87 | 83 | 79 | 76 | 73 | 70 | 70 | 72 | 77 | 82 | 87 |
| Wind speed (km/h) | 11.1 | 10.7 | 8.1 | 6.0 | 4.5 | 4.3 | 4.5 | 4.5 | 5.1 | 6.0 | 6.9 | 8.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 81 | 77 | 74 | 71 | 67 | 63 |
| Clear days (≤ 30% cloud) | 1 | 2 | 3 | 4 | 4 | 5 |
| Partly cloudy days (30–70%) | 6 | 7 | 9 | 8 | 10 | 11 |
| Cloudy days (≥ 70%) | 24 | 20 | 20 | 18 | 16 | 14 |
| Relative humidity (%) | 89 | 87 | 83 | 79 | 76 | 73 |
| Wind speed (km/h) | 11.1 | 10.7 | 8.1 | 6.0 | 4.5 | 4.3 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 59 | 61 | 70 | 77 | 81 |
| Clear days (≤ 30% cloud) | 5 | 6 | 6 | 5 | 2 | 1 |
| Partly cloudy days (30–70%) | 14 | 14 | 10 | 8 | 7 | 6 |
| Cloudy days (≥ 70%) | 12 | 12 | 14 | 19 | 21 | 24 |
| Relative humidity (%) | 70 | 70 | 72 | 77 | 82 | 87 |
| Wind speed (km/h) | 4.5 | 4.5 | 5.1 | 6.0 | 6.9 | 8.7 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Buffalo (NOAA GHCN station USW00014733), about 14 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.