Kalispell weather in August: Kalispell, Montana: normal highs, lows, rain and records for August
Kalispell in August has a normal high of 82°F and a normal low of 46°F, a daily mean of 64°F, falling from 86°F on the 1st to 77°F by the 31st. Measurable precipitation falls on 6 days in a normal August, 0.76 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 28°C and low of 8°C, 19 mm of precipitation in August.
- NOAA stationKalispell Glacier Airport
- Station IDUSC00244558
- Location48.30°N 114.26°W
- Elevation2,957 ft (901 m)
- Population31,296
- Jan 31° 16°
- Feb 36° 18°
- Mar 45° 24°
- Apr 55° 31°
- May 65° 38°
- Jun 71° 44°
- Jul 82° 48°
- Aug 82° 46°
- Sep 70° 38°
- Oct 54° 29°
- Nov 39° 24°
- Dec 31° 17°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Kalispell in August?
The normal high is 82°F and the normal low 46°F, for a daily mean of 63.7°F. August is 1.2°F cooler than July and 9.4°F warmer than September. August is the 2nd warmest month of the year in Kalispell and the 12th wettest. Across the month the normal high falls 9°F, from 86°F on August 1 to 77°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 62°F and 66°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 24%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 86°F | 48°F | 20% | 7% |
| August 8 | 84°F | 47°F | 20% | 7% |
| August 15 | 82°F | 46°F | 21% | 8% |
| August 22 | 80°F | 45°F | 22% | 9% |
| August 31 | 77°F | 42°F | 24% | 10% |
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 | 86°F | 48°F | 20% | 7% | 15 h |
| August 2 | 85°F | 48°F | 20% | 7% | 15 h |
| August 3 | 85°F | 48°F | 20% | 7% | 15 h |
| August 4 | 85°F | 48°F | 20% | 7% | 15 h |
| August 5 | 85°F | 48°F | 20% | 7% | 14 h 50 min |
| August 6 | 85°F | 48°F | 20% | 7% | 14 h 50 min |
| August 7 | 85°F | 48°F | 20% | 7% | 14 h 50 min |
| August 8 | 84°F | 47°F | 20% | 7% | 14 h 50 min |
| August 9 | 84°F | 47°F | 20% | 8% | 14 h 40 min |
| August 10 | 84°F | 47°F | 20% | 8% | 14 h 40 min |
| August 11 | 84°F | 47°F | 21% | 8% | 14 h 40 min |
| August 12 | 83°F | 47°F | 21% | 8% | 14 h 30 min |
| August 13 | 83°F | 47°F | 21% | 8% | 14 h 30 min |
| August 14 | 83°F | 46°F | 21% | 8% | 14 h 30 min |
| August 15 | 82°F | 46°F | 21% | 8% | 14 h 20 min |
| August 16 | 82°F | 46°F | 21% | 8% | 14 h 20 min |
| August 17 | 82°F | 46°F | 21% | 8% | 14 h 20 min |
| August 18 | 81°F | 45°F | 22% | 8% | 14 h 10 min |
| August 19 | 81°F | 45°F | 22% | 8% | 14 h 10 min |
| August 20 | 81°F | 45°F | 22% | 9% | 14 h 10 min |
| August 21 | 80°F | 45°F | 22% | 9% | 14 h |
| August 22 | 80°F | 45°F | 22% | 9% | 14 h |
| August 23 | 80°F | 44°F | 22% | 9% | 14 h |
| August 24 | 79°F | 44°F | 22% | 9% | 13 h 50 min |
| August 25 | 79°F | 44°F | 23% | 9% | 13 h 50 min |
| August 26 | 78°F | 44°F | 23% | 10% | 13 h 50 min |
| August 27 | 78°F | 43°F | 23% | 10% | 13 h 50 min |
| August 28 | 78°F | 43°F | 23% | 10% | 13 h 40 min |
| August 29 | 77°F | 43°F | 23% | 10% | 13 h 40 min |
| August 30 | 77°F | 43°F | 23% | 10% | 13 h 30 min |
| August 31 | 77°F | 42°F | 24% | 10% | 13 h 30 min |
- Normal high
- 82°FAugust average
- Normal low
- 46°FAugust average
- Precipitation
- 0.76 inmonth total
- Days with precipitation
- 60.01 inch or more
- Days at 90°F or more
- 6
- Daylight
- 15 h to 13 h 30 minAugust 1 to August 31
- Days at 70°F or more
- 28
- Days at 80°F or more
- 20
- Sunshine
- 83%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USC00244558; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Kalispell in August?
On a given August day the chance of 0.01 inch or more is 21% on average, highest around August 31 (24%). In all, 0.76 in falls on 6 days of a normal August.
In a normal August in Kalispell, 6 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USC00244558.
How humid and windy is Kalispell in August?
At 3 p.m. the normal temperature is 75°F with 30% relative humidity and a dew point of 41°F; at 6 a.m. it is 46°F with 84% humidity. The wind averages 5.0 mph, most often from the south in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 46°F | 41°F | 84% | 2.9 mph | 69% |
| 9 a.m. | 60°F | 45°F | 57% | 5.4 mph | 71% |
| noon | 70°F | 43°F | 38% | 7.1 mph | 67% |
| 3 p.m. | 75°F | 41°F | 30% | 8.7 mph | 64% |
| 6 p.m. | 73°F | 42°F | 32% | 7.2 mph | 68% |
| 9 p.m. | 58°F | 43°F | 58% | 3.6 mph | 71% |
Source: NOAA NCEI 1991-2020 hourly normals, station USC00244558. 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 Kalispell?
The warmest August temperature on Kalispell's official record (since 1899) is 105°F, on August 4, 1961; the coldest is 30°F, on August 25, 1910. The wettest August brought 3.78 in (1976).
The August mean against the 1991-2020 normal of 63.7°F: 2021 64.9°F (+1.2), 2022 67.5°F (+3.8), 2023 66.8°F (+3.1), 2024 66.5°F (+2.8), 2025 66.1°F (+2.4), 2026 64.1°F (+0.4). 6 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 64.9°F | +1.2°F | 1.76 in |
| 2022 | 67.5°F | +3.8°F | 0.14 in |
| 2023 | 66.8°F | +3.1°F | 2.95 in |
| 2024 | 66.5°F | +2.8°F | 2.00 in |
| 2025 | 66.1°F | +2.4°F | 0.67 in |
| 2026 | 64.1°F | +0.4°F | 1.10 in |
Source: records: ACIS, NWS threaded record FCAthr; recent months: ACIS, station USC00244558. Records and recent months use complete months only.
How does August in Kalispell compare across Montana?
Across the 141 places PlainClimate covers in Montana, August normal highs run from 71°F in Cooke City to 90°F in Hardin; Kalispell's is 82°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.