Miles City weather in August: Miles City, Montana: normal highs, lows, rain and records for August
Miles City in August has a normal high of 87°F and a normal low of 58°F, a daily mean of 73°F, falling from 91°F on the 1st to 83°F by the 31st. Measurable precipitation falls on 7 days in a normal August, 0.91 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 31°C and low of 14°C, 23 mm of precipitation in August.
- NOAA stationMiles City F Wiley Field
- Station IDUSW00024037
- Location46.43°N 105.88°W
- Elevation2,624 ft (800 m)
- Population8,407
- Jan 30° 9°
- Feb 35° 13°
- Mar 47° 23°
- Apr 58° 33°
- May 68° 43°
- Jun 79° 53°
- Jul 89° 60°
- Aug 87° 58°
- Sep 76° 47°
- Oct 59° 34°
- Nov 44° 21°
- Dec 33° 12°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Miles City in August?
The normal high is 87°F and the normal low 58°F, for a daily mean of 72.5°F. August is 1.7°F cooler than July and 11.3°F warmer than September. August is the 2nd warmest month of the year in Miles City and the 7th wettest. Across the month the normal high falls 8°F, from 91°F on August 1 to 83°F on August 31. From one year to the next August's mean temperature typically moves about 2.7°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 70°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 22%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 91°F | 61°F | 22% | 9% |
| August 8 | 90°F | 60°F | 21% | 8% |
| August 15 | 88°F | 58°F | 21% | 8% |
| August 22 | 86°F | 56°F | 21% | 8% |
| August 31 | 83°F | 53°F | 21% | 9% |
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 | 91°F | 61°F | 22% | 9% | 14 h 50 min |
| August 2 | 91°F | 61°F | 22% | 9% | 14 h 50 min |
| August 3 | 91°F | 61°F | 22% | 9% | 14 h 50 min |
| August 4 | 90°F | 61°F | 22% | 9% | 14 h 50 min |
| August 5 | 90°F | 61°F | 22% | 9% | 14 h 40 min |
| August 6 | 90°F | 61°F | 21% | 9% | 14 h 40 min |
| August 7 | 90°F | 60°F | 21% | 9% | 14 h 40 min |
| August 8 | 90°F | 60°F | 21% | 8% | 14 h 30 min |
| August 9 | 90°F | 60°F | 21% | 8% | 14 h 30 min |
| August 10 | 89°F | 60°F | 21% | 8% | 14 h 30 min |
| August 11 | 89°F | 59°F | 21% | 8% | 14 h 30 min |
| August 12 | 89°F | 59°F | 21% | 8% | 14 h 20 min |
| August 13 | 89°F | 59°F | 21% | 8% | 14 h 20 min |
| August 14 | 88°F | 59°F | 21% | 8% | 14 h 20 min |
| August 15 | 88°F | 58°F | 21% | 8% | 14 h 10 min |
| August 16 | 88°F | 58°F | 21% | 8% | 14 h 10 min |
| August 17 | 88°F | 58°F | 21% | 8% | 14 h 10 min |
| August 18 | 87°F | 57°F | 21% | 8% | 14 h 10 min |
| August 19 | 87°F | 57°F | 21% | 8% | 14 h |
| August 20 | 87°F | 57°F | 21% | 8% | 14 h |
| August 21 | 86°F | 56°F | 21% | 8% | 14 h |
| August 22 | 86°F | 56°F | 21% | 8% | 13 h 50 min |
| August 23 | 86°F | 56°F | 21% | 8% | 13 h 50 min |
| August 24 | 85°F | 55°F | 21% | 8% | 13 h 50 min |
| August 25 | 85°F | 55°F | 21% | 8% | 13 h 40 min |
| August 26 | 85°F | 55°F | 21% | 8% | 13 h 40 min |
| August 27 | 84°F | 54°F | 21% | 9% | 13 h 40 min |
| August 28 | 84°F | 54°F | 21% | 9% | 13 h 40 min |
| August 29 | 83°F | 53°F | 21% | 9% | 13 h 30 min |
| August 30 | 83°F | 53°F | 21% | 9% | 13 h 30 min |
| August 31 | 83°F | 53°F | 21% | 9% | 13 h 30 min |
- Normal high
- 87°FAugust average
- Normal low
- 58°FAugust average
- Precipitation
- 0.91 inmonth total
- Days with precipitation
- 70.01 inch or more
- Days at 90°F or more
- 15
- Daylight
- 14 h 50 min to 13 h 30 minAugust 1 to August 31
- Days at 70°F or more
- 30
- Days at 80°F or more
- 25
- Sunshine
- 86%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00024037; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Miles City in August?
On a given August day the chance of 0.01 inch or more is 21% on average, highest around August 1 (22%). In all, 0.91 in falls on 7 days of a normal August.
In a normal August in Miles City, 15 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00024037.
How humid and windy is Miles City in August?
At 3 p.m. the normal temperature is 83°F with 24% relative humidity and a dew point of 42°F; at 6 a.m. it is 57°F with 65% humidity. The wind averages 9.1 mph, most often from the 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. | 57°F | 45°F | 65% | 7.7 mph | 72% |
| 9 a.m. | 68°F | 47°F | 46% | 9.2 mph | 77% |
| noon | 79°F | 45°F | 30% | 10.3 mph | 74% |
| 3 p.m. | 83°F | 42°F | 24% | 10.9 mph | 72% |
| 6 p.m. | 78°F | 42°F | 28% | 9.5 mph | 76% |
| 9 p.m. | 69°F | 44°F | 40% | 8.8 mph | 77% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00024037. 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 Miles City?
The warmest August temperature on this station's record (since 1937) is 110°F, on August 7, 1949; the coldest is 35°F, on August 22, 1966. The wettest August brought 4.00 in (1951).
The August mean against the 1991-2020 normal of 72.5°F: 2021 71.7°F (−0.8), 2022 76.7°F (+4.2), 2023 73.4°F (+0.9), 2024 72.2°F (−0.3), 2025 72.8°F (+0.3), 2026 72.5°F (at normal). 3 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 71.7°F | −0.8°F | 1.45 in |
| 2022 | 76.7°F | +4.2°F | 0.94 in |
| 2023 | 73.4°F | +0.9°F | 3.06 in |
| 2024 | 72.2°F | −0.3°F | 2.01 in |
| 2025 | 72.8°F | +0.3°F | 1.14 in |
| 2026 | 72.5°F | at normal | 0.88 in |
Source: records: ACIS, station USW00024037; recent months: ACIS, station USW00024037. Records and recent months use complete months only.
How does August in Miles City 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; Miles City's is 87°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.