Grand Forks weather in August: Grand Forks, North Dakota: normal highs, lows, rain and records for August
Grand Forks in August has a normal high of 80°F and a normal low of 54°F, a daily mean of 67°F, falling from 82°F on the 1st to 77°F by the 31st. Measurable precipitation falls on 9 days in a normal August, 2.81 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 27°C and low of 12°C, 71 mm of precipitation in August.
- NOAA stationGrand Forks International Airport
- Station IDUSW00014916
- Location47.94°N 97.18°W
- Elevation842 ft (257 m)
- From the center5 miles
- Population59,845
- Jan 16° -3°
- Feb 21° 1°
- Mar 34° 15°
- Apr 52° 29°
- May 67° 41°
- Jun 76° 53°
- Jul 81° 57°
- Aug 80° 54°
- Sep 70° 45°
- Oct 54° 33°
- Nov 36° 18°
- Dec 21° 4°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Grand Forks in August?
The normal high is 80°F and the normal low 54°F, for a daily mean of 67.0°F. August is 1.9°F cooler than July and 9.1°F warmer than September. August is the 2nd warmest month of the year in Grand Forks and the 3rd wettest. Across the month the normal high falls 5°F, from 82°F on August 1 to 77°F on August 31. From one year to the next August's mean temperature typically moves about 2.3°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 65°F and 69°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 29%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 82°F | 57°F | 29% | 16% |
| August 8 | 81°F | 56°F | 29% | 16% |
| August 15 | 80°F | 55°F | 29% | 16% |
| August 22 | 79°F | 53°F | 29% | 16% |
| August 31 | 77°F | 51°F | 29% | 16% |
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 | 82°F | 57°F | 29% | 16% | 15 h |
| August 2 | 82°F | 57°F | 29% | 16% | 15 h |
| August 3 | 82°F | 57°F | 29% | 16% | 15 h |
| August 4 | 81°F | 56°F | 29% | 16% | 14 h 50 min |
| August 5 | 81°F | 56°F | 29% | 16% | 14 h 50 min |
| August 6 | 81°F | 56°F | 29% | 16% | 14 h 50 min |
| August 7 | 81°F | 56°F | 29% | 16% | 14 h 50 min |
| August 8 | 81°F | 56°F | 29% | 16% | 14 h 40 min |
| August 9 | 81°F | 56°F | 29% | 16% | 14 h 40 min |
| August 10 | 81°F | 56°F | 29% | 16% | 14 h 40 min |
| August 11 | 81°F | 56°F | 29% | 16% | 14 h 30 min |
| August 12 | 81°F | 55°F | 29% | 16% | 14 h 30 min |
| August 13 | 81°F | 55°F | 29% | 16% | 14 h 30 min |
| August 14 | 81°F | 55°F | 29% | 16% | 14 h 30 min |
| August 15 | 80°F | 55°F | 29% | 16% | 14 h 20 min |
| August 16 | 80°F | 55°F | 29% | 16% | 14 h 20 min |
| August 17 | 80°F | 54°F | 29% | 16% | 14 h 20 min |
| August 18 | 80°F | 54°F | 29% | 16% | 14 h 10 min |
| August 19 | 80°F | 54°F | 29% | 16% | 14 h 10 min |
| August 20 | 80°F | 54°F | 29% | 16% | 14 h 10 min |
| August 21 | 79°F | 54°F | 29% | 16% | 14 h |
| August 22 | 79°F | 53°F | 29% | 16% | 14 h |
| August 23 | 79°F | 53°F | 29% | 16% | 14 h |
| August 24 | 79°F | 53°F | 29% | 16% | 13 h 50 min |
| August 25 | 78°F | 53°F | 29% | 16% | 13 h 50 min |
| August 26 | 78°F | 52°F | 29% | 16% | 13 h 50 min |
| August 27 | 78°F | 52°F | 29% | 16% | 13 h 40 min |
| August 28 | 78°F | 52°F | 29% | 16% | 13 h 40 min |
| August 29 | 77°F | 51°F | 29% | 16% | 13 h 40 min |
| August 30 | 77°F | 51°F | 29% | 16% | 13 h 30 min |
| August 31 | 77°F | 51°F | 29% | 16% | 13 h 30 min |
- Normal high
- 80°FAugust average
- Normal low
- 54°FAugust average
- Precipitation
- 2.81 inmonth total
- Days with precipitation
- 90.01 inch or more
- Days at 90°F or more
- 3
- Daylight
- 15 h to 13 h 30 minAugust 1 to August 31
- Days at 70°F or more
- 29
- Days at 80°F or more
- 17
- Sunshine
- 80%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00014916; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Grand Forks in August?
On a given August day the chance of 0.01 inch or more is 29% on average, highest around August 26 (29%). In all, 2.81 in falls on 9 days of a normal August, 1 of them with an inch or more.
In a normal August in Grand Forks, 3 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00014916.
What are the records for August in Grand Forks?
The warmest August temperature on Grand Forks's official record (since 1941) is 104°F, on August 7, 1983; the coldest is 31°F, on August 28, 1986. The wettest August brought 12.73 in (1944).
The August mean against the 1991-2020 normal of 67.0°F: 2021 69.7°F (+2.7), 2022 69.1°F (+2.1), 2023 68.3°F (+1.3), 2024 69.1°F (+2.1), 2025 69.1°F (+2.1), 2026 68.0°F (+1.0). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 69.7°F | +2.7°F | 5.06 in |
| 2022 | 69.1°F | +2.1°F | 1.42 in |
| 2023 | 68.3°F | +1.3°F | 1.14 in |
| 2024 | 69.1°F | +2.1°F | 4.83 in |
| 2025 | 69.1°F | +2.1°F | 1.15 in |
| 2026 | 68.0°F | +1.0°F | 2.70 in |
Source: records: ACIS, NWS threaded record GFKthr; recent months: ACIS, station USW00014916. Records and recent months use complete months only.
How does August in Grand Forks compare across North Dakota?
Across the 92 places PlainClimate covers in North Dakota, August normal highs run from 75°F in Rolla to 86°F in Beulah; Grand Forks's is 80°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.
Other months and places
- Grand Forks in July81°F by day, 57°F at night
- Grand Forks in September70°F by day, 45°F at night
- Grand Forks through the yearEvery month, frost dates, records and recent years
- North Dakota in AugustThe statewide normal and the warmest and coolest places
- Beulah: North Dakota's warmest Augustnormal high 86°F