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Wilmington, North Carolina climate
Cfa Humid subtropical
Wilmington has a seasonal mild-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 2°C at night. Around 1435 mm of precipitation falls each year, peaking in August (190 mm) and easing off in April (85 mm).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 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 countsWilmington climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 13 | 15 | 19 | 23 | 27 | 30 | 32 | 31 | 29 | 24 | 19 | 15 |
| Avg temp (°C) | 8 | 9 | 13 | 17 | 21 | 25 | 27 | 26 | 24 | 18 | 13 | 9 |
| Avg low (°C) | 2 | 3 | 6 | 11 | 16 | 20 | 23 | 22 | 19 | 13 | 7 | 4 |
| Precipitation (mm) | 101 | 89 | 96 | 85 | 107 | 133 | 157 | 190 | 189 | 105 | 90 | 93 |
| Snowfall (cm) | 1 | 1 | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 13 | 15 | 19 | 23 | 27 | 30 |
| Avg temp (°C) | 8 | 9 | 13 | 17 | 21 | 25 |
| Avg low (°C) | 2 | 3 | 6 | 11 | 16 | 20 |
| Precipitation (mm) | 101 | 89 | 96 | 85 | 107 | 133 |
| Snowfall (cm) | 1 | 1 | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 32 | 31 | 29 | 24 | 19 | 15 |
| Avg temp (°C) | 27 | 26 | 24 | 18 | 13 | 9 |
| Avg low (°C) | 23 | 22 | 19 | 13 | 7 | 4 |
| Precipitation (mm) | 157 | 190 | 189 | 105 | 90 | 93 |
| Snowfall (cm) | — | — | — | — | — | — |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 9 | 10 | 8 | 10 | 11 | 12 | 13 | 10 | 9 | 9 | 10 |
| Days with high ≥ 32°C (days) | — | 0.0 | — | 0.2 | 2 | 9 | 15 | 10 | 3 | 0.3 | — | — |
| Days with low ≤ 0°C (days) | 13 | 9 | 4 | 0.5 | — | — | — | — | — | 0.2 | 4 | 9 |
| Days with snowfall ≥ 2.5 cm (days) | 0.1 | 0.1 | — | — | — | — | — | — | — | — | — | — |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 10 | 9 | 10 | 8 | 10 | 11 |
| Days with high ≥ 32°C (days) | — | 0.0 | — | 0.2 | 2 | 9 |
| Days with low ≤ 0°C (days) | 13 | 9 | 4 | 0.5 | — | — |
| Days with snowfall ≥ 2.5 cm (days) | 0.1 | 0.1 | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 12 | 13 | 10 | 9 | 9 | 10 |
| Days with high ≥ 32°C (days) | 15 | 10 | 3 | 0.3 | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 0.2 | 4 | 9 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | — | — | — |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 68 | 62 | 55 | 55 | 58 | 57 | 59 | 58 | 53 | 59 | 67 |
| Clear days (≤ 30% cloud) | 3 | 2 | 6 | 8 | 8 | 6 | 6 | 6 | 7 | 10 | 5 | 3 |
| Partly cloudy days (30–70%) | 12 | 11 | 12 | 12 | 12 | 12 | 13 | 13 | 11 | 10 | 13 | 13 |
| Cloudy days (≥ 70%) | 16 | 14 | 14 | 11 | 12 | 12 | 11 | 12 | 12 | 11 | 12 | 16 |
| Relative humidity (%) | 81 | 79 | 78 | 77 | 77 | 77 | 78 | 78 | 78 | 77 | 78 | 81 |
| Wind speed (m/s) | 4.3 | 4.3 | 4.3 | 4.2 | 3.7 | 3.4 | 3.4 | 3.2 | 3.7 | 3.7 | 3.9 | 4.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 68 | 68 | 62 | 55 | 55 | 58 |
| Clear days (≤ 30% cloud) | 3 | 2 | 6 | 8 | 8 | 6 |
| Partly cloudy days (30–70%) | 12 | 11 | 12 | 12 | 12 | 12 |
| Cloudy days (≥ 70%) | 16 | 14 | 14 | 11 | 12 | 12 |
| Relative humidity (%) | 81 | 79 | 78 | 77 | 77 | 77 |
| Wind speed (m/s) | 4.3 | 4.3 | 4.3 | 4.2 | 3.7 | 3.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 57 | 59 | 58 | 53 | 59 | 67 |
| Clear days (≤ 30% cloud) | 6 | 6 | 7 | 10 | 5 | 3 |
| Partly cloudy days (30–70%) | 13 | 13 | 11 | 10 | 13 | 13 |
| Cloudy days (≥ 70%) | 11 | 12 | 12 | 11 | 12 | 16 |
| Relative humidity (%) | 78 | 78 | 78 | 77 | 78 | 81 |
| Wind speed (m/s) | 3.4 | 3.2 | 3.7 | 3.7 | 3.9 | 4.1 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at New Rvr Mcaf (NOAA GHCN station USW00093727), about 70 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.