Salem weather in August: Salem, Oregon: normal highs, lows, rain and records for August
Salem in August has a normal high of 84°F and a normal low of 55°F, a daily mean of 69°F, falling from 85°F on the 1st to 81°F by the 31st. Measurable precipitation falls on 3 days in a normal August, 0.39 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 13°C, 10 mm of precipitation in August.
- NOAA stationSalem Airport (McNary Field)
- Station IDUSW00024232
- Location44.91°N 123.00°W
- Elevation205 ft (63 m)
- Population180,406
- Jan 48° 36°
- Feb 52° 36°
- Mar 57° 38°
- Apr 62° 41°
- May 69° 46°
- Jun 75° 51°
- Jul 84° 55°
- Aug 84° 55°
- Sep 78° 51°
- Oct 65° 44°
- Nov 54° 39°
- Dec 47° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Salem in August?
The normal high is 84°F and the normal low 55°F, for a daily mean of 69.2°F. August is 0.1°F cooler than July and 5.2°F warmer than September. August is the 2nd warmest month of the year in Salem and the 11th wettest. Across the month the normal high falls 4°F, from 85°F on August 1 to 81°F on August 31. From one year to the next August's mean temperature typically moves about 1.7°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 68°F and 71°F.
Bars above: each day's normal high to low. Columns below: the chance of 0.01 inch or more of precipitation that day, on a scale of 0 to 100% (highest 15%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 85°F | 56°F | 7% | 3% |
| August 8 | 85°F | 56°F | 8% | 3% |
| August 15 | 84°F | 55°F | 9% | 4% |
| August 22 | 83°F | 54°F | 12% | 6% |
| August 31 | 81°F | 53°F | 15% | 8% |
Every day of August: normal high, low and chance of precipitation (warmest afternoon August 1, coldest night August 31)
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in | Daylight |
|---|---|---|---|---|---|
| August 1 | 85°F | 56°F | 7% | 3% | 14 h 40 min |
| August 2 | 85°F | 56°F | 7% | 3% | 14 h 40 min |
| August 3 | 85°F | 56°F | 7% | 3% | 14 h 40 min |
| August 4 | 85°F | 56°F | 7% | 3% | 14 h 40 min |
| August 5 | 85°F | 56°F | 8% | 3% | 14 h 30 min |
| August 6 | 85°F | 56°F | 8% | 3% | 14 h 30 min |
| August 7 | 85°F | 56°F | 8% | 3% | 14 h 30 min |
| August 8 | 85°F | 56°F | 8% | 3% | 14 h 30 min |
| August 9 | 85°F | 56°F | 8% | 3% | 14 h 20 min |
| August 10 | 85°F | 55°F | 8% | 3% | 14 h 20 min |
| August 11 | 84°F | 55°F | 9% | 4% | 14 h 20 min |
| August 12 | 84°F | 55°F | 9% | 4% | 14 h 20 min |
| August 13 | 84°F | 55°F | 9% | 4% | 14 h 10 min |
| August 14 | 84°F | 55°F | 9% | 4% | 14 h 10 min |
| August 15 | 84°F | 55°F | 9% | 4% | 14 h 10 min |
| August 16 | 84°F | 55°F | 10% | 4% | 14 h 10 min |
| August 17 | 84°F | 55°F | 10% | 5% | 14 h |
| August 18 | 83°F | 55°F | 10% | 5% | 14 h |
| August 19 | 83°F | 55°F | 11% | 5% | 14 h |
| August 20 | 83°F | 55°F | 11% | 5% | 13 h 50 min |
| August 21 | 83°F | 54°F | 11% | 5% | 13 h 50 min |
| August 22 | 83°F | 54°F | 12% | 6% | 13 h 50 min |
| August 23 | 83°F | 54°F | 12% | 6% | 13 h 50 min |
| August 24 | 83°F | 54°F | 13% | 6% | 13 h 40 min |
| August 25 | 82°F | 54°F | 13% | 6% | 13 h 40 min |
| August 26 | 82°F | 54°F | 13% | 7% | 13 h 40 min |
| August 27 | 82°F | 54°F | 14% | 7% | 13 h 30 min |
| August 28 | 82°F | 54°F | 14% | 7% | 13 h 30 min |
| August 29 | 82°F | 54°F | 14% | 7% | 13 h 30 min |
| August 30 | 82°F | 53°F | 15% | 7% | 13 h 20 min |
| August 31 | 81°F | 53°F | 15% | 8% | 13 h 20 min |
- Normal high
- 84°FAugust average
- Normal low
- 55°FAugust average
- Precipitation
- 0.39 inmonth total
- Days with precipitation
- 30.01 inch or more
- Days at 90°F or more
- 7
- Daylight
- 14 h 40 min to 13 h 20 minAugust 1 to August 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 21
- Sunshine
- 86%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024232; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Salem in August?
On a given August day the chance of 0.01 inch or more is 10% on average, highest around August 31 (15%). In all, 0.39 in falls on 3 days of a normal August.
In a normal August in Salem, 7 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024232.
How humid and windy is Salem in August?
At 3 p.m. the normal temperature is 79°F with 36% relative humidity and a dew point of 50°F; at 6 a.m. it is 54°F with 86% humidity. The wind averages 5.5 mph, most often from the north-northwest in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 54°F | 50°F | 86% | 2.7 mph | 70% |
| 9 a.m. | 65°F | 52°F | 63% | 5.8 mph | 67% |
| noon | 74°F | 51°F | 45% | 7.3 mph | 70% |
| 3 p.m. | 79°F | 50°F | 36% | 8.3 mph | 74% |
| 6 p.m. | 76°F | 50°F | 41% | 9.2 mph | 76% |
| 9 p.m. | 65°F | 51°F | 61% | 5.2 mph | 83% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024232. Hourly normals exist only for NOAA's first-order stations; a dash where NOAA publishes no value for that hour (the sky at some hours).
What are the records for August in Salem?
The warmest August temperature on Salem's official record (since 1893) is 108°F, on August 9, 1981; the coldest is 30°F, on August 30, 1920. The wettest August brought 4.17 in (1968).
The August mean against the 1991-2020 normal of 69.2°F: 2021 72.3°F (+3.1), 2022 72.5°F (+3.3), 2023 73.0°F (+3.8), 2024 71.3°F (+2.1), 2025 72.4°F (+3.2), 2026 69.7°F (+0.5). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 72.3°F | +3.1°F | 0.02 in |
| 2022 | 72.5°F | +3.3°F | 0.15 in |
| 2023 | 73.0°F | +3.8°F | 0.86 in |
| 2024 | 71.3°F | +2.1°F | 0.39 in |
| 2025 | 72.4°F | +3.2°F | 0.13 in |
| 2026 | 69.7°F | +0.5°F | 0.01 in |
Source: records: ACIS, NWS threaded record SLEthr; recent months: ACIS, station USW00024232. Records and recent months use complete months only.
How does August in Salem compare across Oregon?
Across the 105 places PlainClimate covers in Oregon, August normal highs run from 64°F in Newport to 94°F in Cave Junction; Salem's is 84°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.