Home › Cities › United States › Pennsylvania › Wayne
Wayne, Pennsylvania climate
Cfa Humid subtropical
Wayne has a strongly seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 32°C, while the coldest is January averaging around −5°C at night. Precipitation is fairly even year-round, totalling about 1287 mm. Winters bring significant snowfall (64 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 countsWayne climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 6 | 11 | 18 | 24 | 29 | 32 | 30 | 27 | 20 | 14 | 8 |
| Avg temp (°C) | 0 | 1 | 5 | 12 | 17 | 23 | 25 | 24 | 20 | 14 | 8 | 3 |
| Avg low (°C) | −5 | −4 | 0 | 5 | 11 | 17 | 19 | 18 | 14 | 7 | 2 | −2 |
| Precipitation (mm) | 93 | 76 | 112 | 99 | 108 | 107 | 119 | 126 | 125 | 110 | 92 | 120 |
| Snowfall (cm) | 17 | 28 | 8 | 1 | — | — | — | — | — | 0 | 0 | 11 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 6 | 11 | 18 | 24 | 29 |
| Avg temp (°C) | 0 | 1 | 5 | 12 | 17 | 23 |
| Avg low (°C) | −5 | −4 | 0 | 5 | 11 | 17 |
| Precipitation (mm) | 93 | 76 | 112 | 99 | 108 | 107 |
| Snowfall (cm) | 17 | 28 | 8 | 1 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 30 | 27 | 20 | 14 | 8 |
| Avg temp (°C) | 25 | 24 | 20 | 14 | 8 | 3 |
| Avg low (°C) | 19 | 18 | 14 | 7 | 2 | −2 |
| Precipitation (mm) | 119 | 126 | 125 | 110 | 92 | 120 |
| Snowfall (cm) | — | — | — | 0 | 0 | 11 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 9 | 10 | 12 | 13 | 11 | 10 | 10 | 8 | 11 | 8 | 10 |
| Days with high ≥ 32°C (days) | — | — | — | 0.5 | 2 | 7 | 13 | 10 | 3 | 0.2 | — | — |
| Days with low ≤ 0°C (days) | 22 | 23 | 15 | 3 | — | — | — | — | — | 1 | 10 | 23 |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 2 | 1 | 0.1 | — | — | — | — | — | 0.0 | 0.1 | 1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 9 | 9 | 10 | 12 | 13 | 11 |
| Days with high ≥ 32°C (days) | — | — | — | 0.5 | 2 | 7 |
| Days with low ≤ 0°C (days) | 22 | 23 | 15 | 3 | — | — |
| Days with snowfall ≥ 2.5 cm (days) | 2 | 2 | 1 | 0.1 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 10 | 8 | 11 | 8 | 10 |
| Days with high ≥ 32°C (days) | 13 | 10 | 3 | 0.2 | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 1 | 10 | 23 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | 0.0 | 0.1 | 1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 64 | 65 | 65 | 65 | 62 | 57 | 56 | 56 | 58 | 63 | 67 |
| Clear days (≤ 30% cloud) | 4 | 4 | 5 | 6 | 4 | 5 | 7 | 8 | 8 | 8 | 5 | 4 |
| Partly cloudy days (30–70%) | 11 | 10 | 10 | 9 | 11 | 11 | 13 | 12 | 10 | 11 | 10 | 11 |
| Cloudy days (≥ 70%) | 16 | 14 | 15 | 16 | 15 | 13 | 12 | 12 | 12 | 13 | 14 | 16 |
| Relative humidity (%) | 86 | 85 | 82 | 78 | 78 | 75 | 70 | 71 | 72 | 77 | 80 | 85 |
| Wind speed (km/h) | 3.5 | 3.9 | 3.5 | 2.4 | 1.6 | 1.4 | 1.3 | 1.3 | 1.5 | 1.6 | 1.7 | 2.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 66 | 64 | 65 | 65 | 65 | 62 |
| Clear days (≤ 30% cloud) | 4 | 4 | 5 | 6 | 4 | 5 |
| Partly cloudy days (30–70%) | 11 | 10 | 10 | 9 | 11 | 11 |
| Cloudy days (≥ 70%) | 16 | 14 | 15 | 16 | 15 | 13 |
| Relative humidity (%) | 86 | 85 | 82 | 78 | 78 | 75 |
| Wind speed (km/h) | 3.5 | 3.9 | 3.5 | 2.4 | 1.6 | 1.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 57 | 56 | 56 | 58 | 63 | 67 |
| Clear days (≤ 30% cloud) | 7 | 8 | 8 | 8 | 5 | 4 |
| Partly cloudy days (30–70%) | 13 | 12 | 10 | 11 | 10 | 11 |
| Cloudy days (≥ 70%) | 12 | 12 | 12 | 13 | 14 | 16 |
| Relative humidity (%) | 70 | 71 | 72 | 77 | 80 | 85 |
| Wind speed (km/h) | 1.3 | 1.3 | 1.5 | 1.6 | 1.7 | 2.4 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Norristown (NOAA GHCN station USC00366370), about 8 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.