Glasgow weather in August: Glasgow, Montana: normal highs, lows, rain and records for August
Glasgow in August has a normal high of 85°F and a normal low of 57°F, a daily mean of 71°F, falling from 88°F on the 1st to 80°F by the 31st. Measurable precipitation falls on 8 days in a normal August, 1.27 inches in all. (NOAA 1991-2020 normals)
In metric: a normal high of 29°C and low of 14°C, 32 mm of precipitation in August.
- NOAA stationGlasgow International Airport
- Station IDUSW00094008
- Location48.21°N 106.62°W
- Elevation2,285 ft (697 m)
- Population3,169
- Jan 24° 6°
- Feb 28° 9°
- Mar 42° 21°
- Apr 57° 33°
- May 68° 43°
- Jun 76° 53°
- Jul 86° 59°
- Aug 85° 57°
- Sep 73° 47°
- Oct 57° 34°
- Nov 40° 21°
- Dec 27° 10°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
How warm is Glasgow in August?
The normal high is 85°F and the normal low 57°F, for a daily mean of 71.0°F. August is 1.0°F cooler than July and 11.1°F warmer than September. August is the 2nd warmest month of the year in Glasgow and the 4th wettest. Across the month the normal high falls 8°F, from 88°F on August 1 to 80°F on August 31. From one year to the next August's mean temperature typically moves about 2.8°F either way (NOAA's standard deviation), so roughly two Augusts in three average between 68°F and 74°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 25%).
| Day | High | Low | Chance of 0.01 in | Chance of 0.10 in |
|---|---|---|---|---|
| August 1 | 88°F | 60°F | 25% | 11% |
| August 8 | 87°F | 59°F | 24% | 10% |
| August 15 | 86°F | 58°F | 24% | 10% |
| August 22 | 83°F | 56°F | 24% | 10% |
| August 31 | 80°F | 53°F | 23% | 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 | 88°F | 60°F | 25% | 11% | 15 h |
| August 2 | 88°F | 60°F | 25% | 11% | 15 h |
| August 3 | 88°F | 60°F | 24% | 11% | 15 h |
| August 4 | 88°F | 60°F | 24% | 11% | 15 h |
| August 5 | 88°F | 60°F | 24% | 11% | 14 h 50 min |
| August 6 | 88°F | 60°F | 24% | 11% | 14 h 50 min |
| August 7 | 88°F | 60°F | 24% | 11% | 14 h 50 min |
| August 8 | 87°F | 59°F | 24% | 10% | 14 h 40 min |
| August 9 | 87°F | 59°F | 24% | 10% | 14 h 40 min |
| August 10 | 87°F | 59°F | 24% | 10% | 14 h 40 min |
| August 11 | 87°F | 59°F | 24% | 10% | 14 h 40 min |
| August 12 | 86°F | 59°F | 24% | 10% | 14 h 30 min |
| August 13 | 86°F | 58°F | 24% | 10% | 14 h 30 min |
| August 14 | 86°F | 58°F | 24% | 10% | 14 h 30 min |
| August 15 | 86°F | 58°F | 24% | 10% | 14 h 20 min |
| August 16 | 85°F | 58°F | 24% | 10% | 14 h 20 min |
| August 17 | 85°F | 57°F | 24% | 10% | 14 h 20 min |
| August 18 | 85°F | 57°F | 24% | 10% | 14 h 10 min |
| August 19 | 84°F | 57°F | 24% | 10% | 14 h 10 min |
| August 20 | 84°F | 57°F | 24% | 10% | 14 h 10 min |
| August 21 | 84°F | 56°F | 24% | 10% | 14 h |
| August 22 | 83°F | 56°F | 24% | 10% | 14 h |
| August 23 | 83°F | 56°F | 24% | 10% | 14 h |
| August 24 | 83°F | 55°F | 24% | 10% | 13 h 50 min |
| August 25 | 82°F | 55°F | 24% | 10% | 13 h 50 min |
| August 26 | 82°F | 55°F | 24% | 10% | 13 h 50 min |
| August 27 | 81°F | 54°F | 24% | 10% | 13 h 40 min |
| August 28 | 81°F | 54°F | 24% | 10% | 13 h 40 min |
| August 29 | 81°F | 53°F | 24% | 10% | 13 h 40 min |
| August 30 | 80°F | 53°F | 23% | 10% | 13 h 30 min |
| August 31 | 80°F | 53°F | 23% | 10% | 13 h 30 min |
- Normal high
- 85°FAugust average
- Normal low
- 57°FAugust average
- Precipitation
- 1.27 inmonth total
- Days with precipitation
- 80.01 inch or more
- Days at 90°F or more
- 10
- 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
- 23
- Sunshine
- 85%of clear-sky sunlight (NASA)
Source: NOAA NCEI 1991-2020 daily normals, station USW00094008; monthly normals. Daylight is computed from the place's latitude with NOAA's solar equations.
Does it rain in Glasgow in August?
On a given August day the chance of 0.01 inch or more is 24% on average, highest around August 1 (25%). In all, 1.27 in falls on 8 days of a normal August.
In a normal August in Glasgow, 10 days reach 90°F.
Source: NOAA NCEI 1991-2020 daily and monthly normals, station USW00094008.
How humid and windy is Glasgow in August?
At 3 p.m. the normal temperature is 79°F with 27% relative humidity and a dew point of 42°F; at 6 a.m. it is 55°F with 68% humidity. The wind averages 10.5 mph, most often from the west in the afternoon. A dew point under 50°F feels dry.
| Time | Temperature | Dew point | Humidity | Wind | Clear or few clouds |
|---|---|---|---|---|---|
| 6 a.m. | 55°F | 45°F | 68% | 8.9 mph | 77% |
| 9 a.m. | 66°F | 47°F | 50% | 10.7 mph | 77% |
| noon | 75°F | 44°F | 33% | 11.8 mph | 78% |
| 3 p.m. | 79°F | 42°F | 27% | 12.0 mph | 74% |
| 6 p.m. | 75°F | 42°F | 31% | 10.3 mph | 81% |
| 9 p.m. | 64°F | 43°F | 47% | 10.6 mph | 85% |
Source: NOAA NCEI 1991-2020 hourly normals, station USW00094008. 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 Glasgow?
The warmest August temperature on Glasgow's official record (since 1893) is 108°F, on August 26, 1926; the coldest is 28°F, on August 23, 1928. The wettest August brought 6.72 in (2014).
The August mean against the 1991-2020 normal of 71.0°F: 2021 71.2°F (+0.2), 2022 77.0°F (+6.0), 2023 73.9°F (+2.9), 2024 72.7°F (+1.7), 2025 71.4°F (+0.4), 2026 70.5°F (−0.5). 5 of 6 ran warmer than normal.
| August | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 71.2°F | +0.2°F | 1.82 in |
| 2022 | 77.0°F | +6.0°F | 0.29 in |
| 2023 | 73.9°F | +2.9°F | 0.53 in |
| 2024 | 72.7°F | +1.7°F | 1.23 in |
| 2025 | 71.4°F | +0.4°F | 1.03 in |
| 2026 | 70.5°F | −0.5°F | 0.64 in |
Source: records: ACIS, NWS threaded record GGWthr; recent months: ACIS, station USW00094008. Records and recent months use complete months only.
How does August in Glasgow 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; Glasgow's is 85°F.
Source: NOAA NCEI 1991-2020 monthly normals for every station in the state.