Grants Pass weather in August: Grants Pass, Oregon: normal highs, lows, rain and records for August
Grants Pass in August has a normal high of 91°F and a normal low of 55°F, a daily mean of 73°F, falling from 93°F on the 1st to 88°F by the 31st. Measurable precipitation falls on 2 days in a normal August, 0.26 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 33°C and low of 13°C, 7 mm of precipitation in August.
- NOAA stationGrants Pass
- Station IDUSC00353445
- Location42.42°N 123.32°W
- Elevation932 ft (284 m)
- Population39,468
- Jan 48° 35°
- Feb 54° 36°
- Mar 60° 37°
- Apr 65° 40°
- May 74° 46°
- Jun 81° 51°
- Jul 91° 56°
- Aug 91° 55°
- Sep 84° 48°
- Oct 70° 41°
- Nov 54° 39°
- Dec 46° 35°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Grants Pass in August?
The normal high is 91°F and the normal low 55°F, for a daily mean of 72.7°F. August is 0.7°F cooler than July and 6.6°F warmer than September. August is the 2nd warmest month of the year in Grants Pass and the 12th wettest. Across the month the normal high falls 5°F, from 93°F on August 1 to 88°F on August 31. From one year to the next August's mean temperature typically moves about 2.1°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 71°F and 75°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 7%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 93°F | 57°F | 5% | 2% |
| August 8 | 92°F | 56°F | 5% | 2% |
| August 15 | 91°F | 55°F | 5% | 3% |
| August 22 | 90°F | 54°F | 6% | 3% |
| August 31 | 88°F | 52°F | 7% | 4% |
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 | 93°F | 57°F | 5% | 2% | 14 h 30 min |
| August 2 | 93°F | 57°F | 5% | 2% | 14 h 30 min |
| August 3 | 92°F | 57°F | 5% | 2% | 14 h 30 min |
| August 4 | 92°F | 57°F | 5% | 2% | 14 h 20 min |
| August 5 | 92°F | 57°F | 5% | 2% | 14 h 20 min |
| August 6 | 92°F | 57°F | 5% | 2% | 14 h 20 min |
| August 7 | 92°F | 57°F | 5% | 2% | 14 h 20 min |
| August 8 | 92°F | 56°F | 5% | 2% | 14 h 10 min |
| August 9 | 92°F | 56°F | 5% | 2% | 14 h 10 min |
| August 10 | 92°F | 56°F | 5% | 2% | 14 h 10 min |
| August 11 | 92°F | 56°F | 5% | 2% | 14 h 10 min |
| August 12 | 91°F | 56°F | 5% | 2% | 14 h |
| August 13 | 91°F | 56°F | 5% | 2% | 14 h |
| August 14 | 91°F | 55°F | 5% | 2% | 14 h |
| August 15 | 91°F | 55°F | 5% | 3% | 14 h |
| August 16 | 91°F | 55°F | 5% | 3% | 13 h 50 min |
| August 17 | 91°F | 55°F | 5% | 3% | 13 h 50 min |
| August 18 | 90°F | 55°F | 5% | 3% | 13 h 50 min |
| August 19 | 90°F | 55°F | 5% | 3% | 13 h 50 min |
| August 20 | 90°F | 54°F | 6% | 3% | 13 h 40 min |
| August 21 | 90°F | 54°F | 6% | 3% | 13 h 40 min |
| August 22 | 90°F | 54°F | 6% | 3% | 13 h 40 min |
| August 23 | 90°F | 54°F | 6% | 3% | 13 h 40 min |
| August 24 | 89°F | 54°F | 6% | 3% | 13 h 30 min |
| August 25 | 89°F | 53°F | 6% | 3% | 13 h 30 min |
| August 26 | 89°F | 53°F | 7% | 4% | 13 h 30 min |
| August 27 | 89°F | 53°F | 7% | 4% | 13 h 30 min |
| August 28 | 89°F | 53°F | 7% | 4% | 13 h 20 min |
| August 29 | 88°F | 53°F | 7% | 4% | 13 h 20 min |
| August 30 | 88°F | 52°F | 7% | 4% | 13 h 20 min |
| August 31 | 88°F | 52°F | 7% | 4% | 13 h 20 min |
- Normal high
- 91°FAugust average
- Normal low
- 55°FAugust average
- Precipitation
- 0.26 inmonth total
- Days with precipitation
- 20.01 inch or more
- Days at 90°F or more
- 18
- Daylight
- 14 h 30 min to 13 h 20 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 28
- Sunshine
- 93%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00353445; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Grants Pass in August?
On a given August day the chance of 0.01 inch or more is 5% on average, highest around August 31 (7%). In all, 0.26 in falls on 2 days of a normal August.
In a normal August in Grants Pass, 18 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00353445.
What are the records for August in Grants Pass?
The warmest August temperature on this station's record (since 1893) is 111°F, on August 1, 2015; the coldest is 30°F, on August 20, 1911. The wettest August brought 3.33 in (1976).
The August mean against the 1991-2020 normal of 72.7°F: 2021 74.6°F (+1.9), 2022 77.4°F (+4.7), 2023 76.1°F (+3.4), 2024 73.0°F (+0.3), 2025 77.4°F (+4.7), 2026 75.1°F (+2.4). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 74.6°F | +1.9°F | 0.00 in |
| 2022 | 77.4°F | +4.7°F | 0.01 in |
| 2023 | 76.1°F | +3.4°F | 0.00 in |
| 2024 | 73.0°F | +0.3°F | 1.00 in |
| 2025 | 77.4°F | +4.7°F | 0.53 in |
| 2026 | 75.1°F | +2.4°F | 0.00 in |
Source: records: ACIS, station USC00353445; recent months: ACIS, station USC00353445. Records and recent months use complete months only.
How does August in Grants Pass 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; Grants Pass's is 91°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.