Nampa weather in August: Nampa, Idaho: normal highs, lows, rain and records for August
Nampa in August has a normal high of 92°F and a normal low of 56°F, a daily mean of 74°F, falling from 95°F on the 1st to 87°F by the 31st. Measurable precipitation falls on 2 days in a normal August, 0.20 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 33°C and low of 13°C, 5 mm of precipitation in August.
- NOAA stationNampa Sugar Factory
- Station IDUSC00106305
- Location43.60°N 116.58°W
- Elevation2,470 ft (753 m)
- Population117,350
- Jan 40° 23°
- Feb 47° 26°
- Mar 57° 32°
- Apr 65° 36°
- May 74° 44°
- Jun 83° 51°
- Jul 93° 57°
- Aug 92° 56°
- Sep 81° 47°
- Oct 67° 37°
- Nov 51° 28°
- Dec 40° 23°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Nampa in August?
The normal high is 92°F and the normal low 56°F, for a daily mean of 73.6°F. August is 1.7°F cooler than July and 9.8°F warmer than September. August is the 2nd warmest month of the year in Nampa and the 12th wettest. Across the month the normal high falls 8°F, from 95°F on August 1 to 87°F on August 31. From one year to the next August's mean temperature typically moves about 2.0°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 72°F and 76°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 | 95°F | 59°F | 6% | 2% |
| August 8 | 94°F | 58°F | 5% | 3% |
| August 15 | 92°F | 56°F | 5% | 3% |
| August 22 | 90°F | 54°F | 6% | 3% |
| August 31 | 87°F | 51°F | 7% | 3% |
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 | 95°F | 59°F | 6% | 2% | 14 h 40 min |
| August 2 | 95°F | 59°F | 6% | 2% | 14 h 30 min |
| August 3 | 95°F | 58°F | 6% | 2% | 14 h 30 min |
| August 4 | 95°F | 58°F | 6% | 2% | 14 h 30 min |
| August 5 | 95°F | 58°F | 6% | 2% | 14 h 30 min |
| August 6 | 95°F | 58°F | 5% | 2% | 14 h 20 min |
| August 7 | 94°F | 58°F | 5% | 2% | 14 h 20 min |
| August 8 | 94°F | 58°F | 5% | 3% | 14 h 20 min |
| August 9 | 94°F | 58°F | 5% | 2% | 14 h 20 min |
| August 10 | 94°F | 57°F | 5% | 2% | 14 h 20 min |
| August 11 | 93°F | 57°F | 5% | 2% | 14 h 10 min |
| August 12 | 93°F | 57°F | 5% | 3% | 14 h 10 min |
| August 13 | 93°F | 57°F | 5% | 3% | 14 h 10 min |
| August 14 | 93°F | 56°F | 5% | 3% | 14 h |
| August 15 | 92°F | 56°F | 5% | 3% | 14 h |
| August 16 | 92°F | 56°F | 5% | 3% | 14 h |
| August 17 | 92°F | 56°F | 5% | 3% | 14 h |
| August 18 | 91°F | 55°F | 5% | 3% | 13 h 50 min |
| August 19 | 91°F | 55°F | 6% | 3% | 13 h 50 min |
| August 20 | 91°F | 55°F | 6% | 3% | 13 h 50 min |
| August 21 | 90°F | 54°F | 6% | 3% | 13 h 50 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 40 min |
| August 25 | 89°F | 53°F | 6% | 3% | 13 h 40 min |
| August 26 | 89°F | 53°F | 6% | 3% | 13 h 30 min |
| August 27 | 88°F | 53°F | 6% | 3% | 13 h 30 min |
| August 28 | 88°F | 52°F | 6% | 3% | 13 h 30 min |
| August 29 | 88°F | 52°F | 6% | 3% | 13 h 20 min |
| August 30 | 87°F | 52°F | 7% | 3% | 13 h 20 min |
| August 31 | 87°F | 51°F | 7% | 3% | 13 h 20 min |
- Normal high
- 92°FAugust average
- Normal low
- 56°FAugust average
- Precipitation
- 0.20 inmonth total
- Days with precipitation
- 20.01 inch or more
- Days at 90°F or more
- 21
- Daylight
- 14 h 40 min to 13 h 20 minAugust 1 to August 31
- Days at 70°F or more
- 31
- Days at 80°F or more
- 29
- Sunshine
- 92%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00106305; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Nampa in August?
On a given August day the chance of 0.01 inch or more is 6% on average, highest around August 31 (7%). In all, 0.20 in falls on 2 days of a normal August.
In a normal August in Nampa, 21 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00106305.
What are the records for August in Nampa?
The warmest August temperature on this station's record (since 1976) is 107°F, on August 9, 1990; the coldest is 36°F, on August 24, 1992. The wettest August brought 1.37 in (1979).
Source: records: ACIS, station USC00106305. Records and recent months use complete months only.
How does August in Nampa compare across Idaho?
Across the 85 places PlainClimate covers in Idaho, August normal highs run from 69°F in Mullan to 97°F in Glenns Ferry; Nampa's is 92°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.