Climate averages 1991–2020
Salem, United States weather
in August.
A warm, very dry month: the warmest and the 2nd driest of the year. Meets the pleasant-weather rule
Long-term climate patterns, not a forecast for a particular trip.
August is a warm month in Salem, United States: daytime highs average 27.9°C and nights cool to about 14.1°C. By daytime temperature it is the warmest month of the year.
Expect about 10 mm of rain on roughly 2 days, which makes August a very dry month (the 2nd driest of the 12 months). Daylight, from sunrise to sunset, lasts about 14 h 04 min on an average August day.
The nearest other city in this atlas is Beaverton (63 km away). In August its highs average 27.1°C, 0.8°C cooler than Salem, United States, with 14 mm of rain.
Among the 498 cities listed in the United States, Salem, United States ranks joint 331st of 498 for the warmest August highs and joint 114th of 498 for the driest August (rainfall, lowest first). The mean August high of those 498 cities is 29.9°C; Salem, United States is 2.0°C cooler than that mean.
From August to September, average highs fall by 3.4°C to 24.5°C, and monthly rainfall rises from 10 mm to 32 mm.
The annual picture
August in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Salem, United States climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.8°C2.0°C | 2.0°C | 154 | 15.9 | 9.29 h |
| February | 10.3°C2.1°C | 2.1°C | 119 | 13.9 | 10.410 h |
| March | 12.3°C3.5°C | 3.5°C | 128 | 15.7 | 11.912 h |
| April | 14.6°C5.1°C | 5.1°C | 92 | 14.3 | 13.513 h |
| May | 18.6°C8.2°C | 8.2°C | 56 | 9.0 | 14.815 h |
| June | 22.0°C10.8°C | 10.8°C | 30 | 5.9 | 15.516 h |
| July | 27.6°C13.7°C | 13.7°C | 7.9 | 1.9 | 15.215 h |
| August, selected | 27.9°C14.1°C | 14.1°C | 10 | 2.0 | 14.114 h |
| September | 24.5°C12.0°C | 12.0°C | 32 | 4.8 | 12.613 h |
| October | 17.4°C7.9°C | 7.9°C | 87 | 10.3 | 11.011 h |
| November | 11.4°C4.4°C | 4.4°C | 153 | 15.9 | 9.610 h |
| December | 8.1°C1.9°C | 1.9°C | 181 | 16.8 | 8.99 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
August in nearby cities
- Beaverton in AugustUnited States · 63 kmHigh 27.1°C · Low 14.2°C · 14 mm rain
- Hillsboro in AugustUnited States · 65 kmHigh 27.1°C · Low 14.4°C · 13 mm rain
- Portland in AugustUnited States · 70 kmHigh 27.6°C · Low 14.6°C · 14 mm rain
- Gresham in AugustUnited States · 78 kmHigh 26.1°C · Low 13.9°C · 20 mm rain
- Vancouver, United States in AugustUnited States · 83 kmHigh 26.9°C · Low 14.2°C · 21 mm rain
- Eugene in AugustUnited States · 99 kmHigh 27.4°C · Low 13.3°C · 12 mm rain
- Bend in AugustUnited States · 168 kmHigh 27.2°C · Low 11.3°C · 14 mm rain
- Tacoma in AugustUnited States · 261 kmHigh 24.3°C · Low 14.2°C · 23 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Salem) is explained once on the Salem, United States year overview and on the Sources, method and limits page.