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Erie, Pennsylvania climate
Cfa Humid subtropical
Erie has a seasonal cool-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is July with an average daily high near 81°F, while the coldest is January averaging around 21°F at night. Precipitation is fairly even year-round, totalling about 43 inches. Snowfall is heavy (104 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 countsErie climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 35 | 37 | 44 | 57 | 68 | 77 | 81 | 80 | 74 | 62 | 51 | 40 |
| Avg temp (°F) | 28 | 29 | 36 | 47 | 59 | 68 | 73 | 72 | 65 | 54 | 44 | 34 |
| Avg low (°F) | 21 | 21 | 28 | 38 | 49 | 59 | 64 | 63 | 57 | 46 | 37 | 28 |
| Precipitation (in) | 3.4 | 2.5 | 3.1 | 3.5 | 3.5 | 3.7 | 3.3 | 3.4 | 4.3 | 4.4 | 3.8 | 4.2 |
| Snowfall (in) | 31.8 | 19.4 | 14.5 | 2.6 | — | — | — | — | — | 0.1 | 9.6 | 26.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 35 | 37 | 44 | 57 | 68 | 77 |
| Avg temp (°F) | 28 | 29 | 36 | 47 | 59 | 68 |
| Avg low (°F) | 21 | 21 | 28 | 38 | 49 | 59 |
| Precipitation (in) | 3.4 | 2.5 | 3.1 | 3.5 | 3.5 | 3.7 |
| Snowfall (in) | 31.8 | 19.4 | 14.5 | 2.6 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 81 | 80 | 74 | 62 | 51 | 40 |
| Avg temp (°F) | 73 | 72 | 65 | 54 | 44 | 34 |
| Avg low (°F) | 64 | 63 | 57 | 46 | 37 | 28 |
| Precipitation (in) | 3.3 | 3.4 | 4.3 | 4.4 | 3.8 | 4.2 |
| Snowfall (in) | — | — | — | 0.1 | 9.6 | 26.3 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 20 | 15 | 14 | 14 | 14 | 11 | 11 | 10 | 10 | 14 | 15 | 18 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.2 | 1 | 2 | 1 | 0.6 | — | — | — |
| Days with low ≤ 32°F (days) | 26 | 24 | 22 | 8 | 0.4 | — | — | — | — | 0.4 | 9 | 21 |
| Days with snowfall ≥ 1 in (days) | 9 | 6 | 4 | 0.7 | — | — | — | — | — | 0.0 | 2 | 7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 20 | 15 | 14 | 14 | 14 | 11 |
| Days with high ≥ 90°F (days) | — | — | — | — | 0.2 | 1 |
| Days with low ≤ 32°F (days) | 26 | 24 | 22 | 8 | 0.4 | — |
| Days with snowfall ≥ 1 in (days) | 9 | 6 | 4 | 0.7 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 11 | 10 | 10 | 14 | 15 | 18 |
| Days with high ≥ 90°F (days) | 2 | 1 | 0.6 | — | — | — |
| Days with low ≤ 32°F (days) | — | — | — | 0.4 | 9 | 21 |
| Days with snowfall ≥ 1 in (days) | — | — | — | 0.0 | 2 | 7 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 77 | 76 | 74 | 72 | 66 | 59 | 58 | 59 | 68 | 75 | 81 |
| Clear days (≤ 30% cloud) | 0.9 | 1 | 1 | 2 | 2 | 3 | 5 | 6 | 7 | 5 | 3 | 1 |
| Partly cloudy days (30–70%) | 7 | 7 | 9 | 8 | 10 | 12 | 15 | 13 | 11 | 8 | 7 | 6 |
| Cloudy days (≥ 70%) | 23 | 20 | 21 | 19 | 19 | 15 | 12 | 12 | 12 | 18 | 20 | 24 |
| Relative humidity (%) | 89 | 88 | 84 | 80 | 78 | 77 | 74 | 72 | 74 | 78 | 83 | 87 |
| Wind speed (mph) | 6.1 | 5.5 | 4.1 | 2.9 | 2.1 | 2.1 | 2.4 | 2.6 | 3.0 | 3.6 | 4.3 | 5.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 80 | 77 | 76 | 74 | 72 | 66 |
| Clear days (≤ 30% cloud) | 0.9 | 1 | 1 | 2 | 2 | 3 |
| Partly cloudy days (30–70%) | 7 | 7 | 9 | 8 | 10 | 12 |
| Cloudy days (≥ 70%) | 23 | 20 | 21 | 19 | 19 | 15 |
| Relative humidity (%) | 89 | 88 | 84 | 80 | 78 | 77 |
| Wind speed (mph) | 6.1 | 5.5 | 4.1 | 2.9 | 2.1 | 2.1 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 59 | 58 | 59 | 68 | 75 | 81 |
| Clear days (≤ 30% cloud) | 5 | 6 | 7 | 5 | 3 | 1 |
| Partly cloudy days (30–70%) | 15 | 13 | 11 | 8 | 7 | 6 |
| Cloudy days (≥ 70%) | 12 | 12 | 12 | 18 | 20 | 24 |
| Relative humidity (%) | 74 | 72 | 74 | 78 | 83 | 87 |
| Wind speed (mph) | 2.4 | 2.6 | 3.0 | 3.6 | 4.3 | 5.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Erie Intl AP (NOAA GHCN station USW00014860), about 10 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.