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Glasgow, Montana climate
BSk Cold semi-arid
Glasgow has a strongly seasonal cold-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is July with an average daily high near 88°F, while the coldest is January averaging around 4°F at night. Precipitation totals about 14 inches a year and is strongly seasonal — June alone averages 2.8 inches while February barely receives 0.35 inches.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Glasgow climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 26 | 31 | 45 | 60 | 70 | 79 | 88 | 88 | 76 | 60 | 43 | 30 |
| Avg temp (°F) | 15 | 19 | 32 | 45 | 55 | 64 | 72 | 71 | 60 | 46 | 31 | 19 |
| Avg low (°F) | 4 | 7 | 19 | 30 | 40 | 50 | 56 | 55 | 45 | 32 | 19 | 8 |
| Precipitation (in) | 0.4 | 0.4 | 0.5 | 1.1 | 2.1 | 2.8 | 2.0 | 1.4 | 1.1 | 1.0 | 0.6 | 0.5 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 26 | 31 | 45 | 60 | 70 | 79 |
| Avg temp (°F) | 15 | 19 | 32 | 45 | 55 | 64 |
| Avg low (°F) | 4 | 7 | 19 | 30 | 40 | 50 |
| Precipitation (in) | 0.4 | 0.4 | 0.5 | 1.1 | 2.1 | 2.8 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 88 | 88 | 76 | 60 | 43 | 30 |
| Avg temp (°F) | 72 | 71 | 60 | 46 | 31 | 19 |
| Avg low (°F) | 56 | 55 | 45 | 32 | 19 | 8 |
| Precipitation (in) | 2.0 | 1.4 | 1.1 | 1.0 | 0.6 | 0.5 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 68 | 69 | 68 | 64 | 62 | 48 | 49 | 55 | 64 | 69 | 70 |
| Relative humidity (%) | 81 | 74 | 65 | 57 | 54 | 53 | 48 | 48 | 53 | 62 | 72 | 79 |
| Wind speed (mph) | 7.9 | 7.9 | 8.4 | 8.5 | 8.3 | 8.0 | 7.1 | 7.1 | 7.4 | 8.1 | 7.8 | 7.7 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 70 | 68 | 69 | 68 | 64 | 62 |
| Relative humidity (%) | 81 | 74 | 65 | 57 | 54 | 53 |
| Wind speed (mph) | 7.9 | 7.9 | 8.4 | 8.5 | 8.3 | 8.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 48 | 49 | 55 | 64 | 69 | 70 |
| Relative humidity (%) | 48 | 48 | 53 | 62 | 72 | 79 |
| Wind speed (mph) | 7.1 | 7.1 | 7.4 | 8.1 | 7.8 | 7.7 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Wokal Field/glasgow Intl Airport, a weather station, about 2 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.