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Springfield, Oregon climate
Csb Warm-summer Mediterranean
Springfield has a seasonal cool-temperate climate (Warm-summer Mediterranean, Köppen Csb). The hottest month is August with an average daily high near 29°C, while the coldest is December averaging around 1°C at night. Precipitation totals about 1037 mm a year and is strongly seasonal — December alone averages 183 mm while July barely receives 8 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 countsSpringfield climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 11 | 14 | 16 | 20 | 23 | 29 | 29 | 26 | 18 | 12 | 8 |
| Avg temp (°C) | 5 | 6 | 8 | 10 | 13 | 16 | 20 | 20 | 17 | 12 | 8 | 5 |
| Avg low (°C) | 2 | 2 | 3 | 4 | 7 | 9 | 11 | 11 | 9 | 5 | 3 | 1 |
| Precipitation (mm) | 154 | 119 | 118 | 84 | 62 | 31 | 8 | 10 | 35 | 81 | 152 | 183 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 9 | 11 | 14 | 16 | 20 | 23 |
| Avg temp (°C) | 5 | 6 | 8 | 10 | 13 | 16 |
| Avg low (°C) | 2 | 2 | 3 | 4 | 7 | 9 |
| Precipitation (mm) | 154 | 119 | 118 | 84 | 62 | 31 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 29 | 29 | 26 | 18 | 12 | 8 |
| Avg temp (°C) | 20 | 20 | 17 | 12 | 8 | 5 |
| Avg low (°C) | 11 | 11 | 9 | 5 | 3 | 1 |
| Precipitation (mm) | 8 | 10 | 35 | 81 | 152 | 183 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 18 | 15 | 18 | 15 | 12 | 8 | 3 | 3 | 6 | 12 | 17 | 19 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.1 | 1 | 7 | 7 | 2 | — | — | — |
| Days with low ≤ 0°C (days) | 11 | 10 | 6 | 2 | 0.4 | — | — | — | 0.1 | 3 | 7 | 12 |
| Days with snowfall ≥ 2.5 cm (days) | 0.1 | 0.3 | — | — | — | — | — | — | — | — | — | 0.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 18 | 15 | 18 | 15 | 12 | 8 |
| Days with high ≥ 32°C (days) | — | — | — | — | 0.1 | 1 |
| Days with low ≤ 0°C (days) | 11 | 10 | 6 | 2 | 0.4 | — |
| Days with snowfall ≥ 2.5 cm (days) | 0.1 | 0.3 | — | — | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 3 | 3 | 6 | 12 | 17 | 19 |
| Days with high ≥ 32°C (days) | 7 | 7 | 2 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | 0.1 | 3 | 7 | 12 |
| 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 (%) | 76 | 74 | 74 | 73 | 67 | 59 | 39 | 39 | 45 | 60 | 74 | 77 |
| Clear days (≤ 30% cloud) | 3 | 4 | 4 | 4 | 6 | 7 | 15 | 14 | 12 | 8 | 3 | 2 |
| Partly cloudy days (30–70%) | 6 | 5 | 7 | 7 | 8 | 9 | 9 | 10 | 9 | 7 | 7 | 7 |
| Cloudy days (≥ 70%) | 22 | 19 | 21 | 20 | 18 | 14 | 7 | 6 | 9 | 15 | 20 | 22 |
| Relative humidity (%) | 93 | 90 | 88 | 86 | 84 | 83 | 80 | 74 | 72 | 80 | 90 | 93 |
| Wind speed (mph) | 0.3 | 0.3 | 0.3 | 0.2 | 0.2 | 0.2 | 0.2 | 0.2 | 0.3 | 0.4 | 0.3 | 0.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 76 | 74 | 74 | 73 | 67 | 59 |
| Clear days (≤ 30% cloud) | 3 | 4 | 4 | 4 | 6 | 7 |
| Partly cloudy days (30–70%) | 6 | 5 | 7 | 7 | 8 | 9 |
| Cloudy days (≥ 70%) | 22 | 19 | 21 | 20 | 18 | 14 |
| Relative humidity (%) | 93 | 90 | 88 | 86 | 84 | 83 |
| Wind speed (mph) | 0.3 | 0.3 | 0.3 | 0.2 | 0.2 | 0.2 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 39 | 39 | 45 | 60 | 74 | 77 |
| Clear days (≤ 30% cloud) | 15 | 14 | 12 | 8 | 3 | 2 |
| Partly cloudy days (30–70%) | 9 | 10 | 9 | 7 | 7 | 7 |
| Cloudy days (≥ 70%) | 7 | 6 | 9 | 15 | 20 | 22 |
| Relative humidity (%) | 80 | 74 | 72 | 80 | 90 | 93 |
| Wind speed (mph) | 0.2 | 0.2 | 0.3 | 0.4 | 0.3 | 0.3 |
Methodology & sources
Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Eugene-mahlon Sweet Fld (NOAA GHCN station USW00024221), about 18 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.