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Redding, California climate
Csa Hot-summer Mediterranean
Redding has a seasonal mild-temperate climate (Hot-summer Mediterranean, Köppen Csa). The hottest month is July with an average daily high near 38°C, while the coldest is December averaging around 3°C at night. Precipitation totals about 851 mm a year and is strongly seasonal — December alone averages 160 mm while July barely receives 2 mm. Snow is occasional (7 cm of snow per year on average).
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 countsRedding climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 16 | 19 | 22 | 28 | 33 | 38 | 37 | 34 | 26 | 18 | 13 |
| Avg temp (°C) | 9 | 10 | 12 | 15 | 20 | 25 | 29 | 27 | 24 | 18 | 12 | 8 |
| Avg low (°C) | 3 | 5 | 6 | 8 | 12 | 17 | 19 | 18 | 15 | 10 | 5 | 3 |
| Precipitation (mm) | 153 | 139 | 117 | 61 | 46 | 19 | 2 | 3 | 11 | 49 | 90 | 160 |
| Snowfall (cm) | 3 | 2 | — | — | — | — | — | — | — | — | — | 2 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 14 | 16 | 19 | 22 | 28 | 33 |
| Avg temp (°C) | 9 | 10 | 12 | 15 | 20 | 25 |
| Avg low (°C) | 3 | 5 | 6 | 8 | 12 | 17 |
| Precipitation (mm) | 153 | 139 | 117 | 61 | 46 | 19 |
| Snowfall (cm) | 3 | 2 | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 38 | 37 | 34 | 26 | 18 | 13 |
| Avg temp (°C) | 29 | 27 | 24 | 18 | 12 | 8 |
| Avg low (°C) | 19 | 18 | 15 | 10 | 5 | 3 |
| Precipitation (mm) | 2 | 3 | 11 | 49 | 90 | 160 |
| Snowfall (cm) | — | — | — | — | — | 2 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 12 | 11 | 12 | 8 | 6 | 3 | 0.5 | 0.6 | 1 | 5 | 9 | 13 |
| Days with high ≥ 32°C (days) | — | — | — | 1 | 7 | 18 | 29 | 27 | 19 | 5 | — | — |
| Days with low ≤ 0°C (days) | 8 | 4 | 1 | 0.3 | — | — | — | — | — | 0.0 | 3 | 10 |
| Days with snowfall ≥ 2.5 cm (days) | 0.1 | 0.1 | — | — | — | — | — | — | — | — | — | 0.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 12 | 11 | 12 | 8 | 6 | 3 |
| Days with high ≥ 32°C (days) | — | — | — | 1 | 7 | 18 |
| Days with low ≤ 0°C (days) | 8 | 4 | 1 | 0.3 | — | — |
| Days with snowfall ≥ 2.5 cm (days) | 0.1 | 0.1 | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 0.5 | 0.6 | 1 | 5 | 9 | 13 |
| Days with high ≥ 32°C (days) | 29 | 27 | 19 | 5 | — | — |
| Days with low ≤ 0°C (days) | — | — | — | 0.0 | 3 | 10 |
| Days with snowfall ≥ 2.5 cm (days) | — | — | — | — | — | 0.1 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 60 | 58 | 52 | 44 | 30 | 17 | 17 | 21 | 34 | 53 | 61 |
| Clear days (≤ 30% cloud) | 8 | 7 | 8 | 9 | 13 | 19 | 25 | 25 | 21 | 18 | 10 | 8 |
| Partly cloudy days (30–70%) | 8 | 9 | 9 | 10 | 9 | 6 | 4 | 4 | 6 | 7 | 9 | 9 |
| Cloudy days (≥ 70%) | 15 | 13 | 14 | 11 | 9 | 5 | 2 | 2 | 2 | 6 | 11 | 15 |
| Relative humidity (%) | 83 | 81 | 78 | 73 | 65 | 49 | 30 | 26 | 31 | 46 | 69 | 81 |
| Wind speed (km/h) | 2.7 | 2.9 | 2.9 | 2.8 | 2.8 | 3.0 | 3.0 | 3.0 | 2.9 | 2.8 | 2.7 | 2.8 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 61 | 60 | 58 | 52 | 44 | 30 |
| Clear days (≤ 30% cloud) | 8 | 7 | 8 | 9 | 13 | 19 |
| Partly cloudy days (30–70%) | 8 | 9 | 9 | 10 | 9 | 6 |
| Cloudy days (≥ 70%) | 15 | 13 | 14 | 11 | 9 | 5 |
| Relative humidity (%) | 83 | 81 | 78 | 73 | 65 | 49 |
| Wind speed (km/h) | 2.7 | 2.9 | 2.9 | 2.8 | 2.8 | 3.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 17 | 17 | 21 | 34 | 53 | 61 |
| Clear days (≤ 30% cloud) | 25 | 25 | 21 | 18 | 10 | 8 |
| Partly cloudy days (30–70%) | 4 | 4 | 6 | 7 | 9 | 9 |
| Cloudy days (≥ 70%) | 2 | 2 | 2 | 6 | 11 | 15 |
| Relative humidity (%) | 30 | 26 | 31 | 46 | 69 | 81 |
| Wind speed (km/h) | 3.0 | 3.0 | 2.9 | 2.8 | 2.7 | 2.8 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Redding AP (NOAA GHCN station USW00024257), about 11 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.