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Monthly climate in Glasgow, Montana, United States

Last updated: May 6, 2024

Under the Köppen–Geiger climate classification Glasgow features a cold semi-arid climate (BSk).Temperatures typically range between -11 °C (13 °F) and 23 °C (75 °F) through the year, but rarely can drop to -37 °C (-35 °F) or can rise to as high as 42 °C (108 °F).The average annual precipitation amounts to about 348 mm (13.7 inches) and receives 62 rainy days on the 1 mm (0.04 inches) threshold annually.Glasgow enjoys an average of 3180 hours of sunshine throughout the year, and daylight varies from 8 hours 24 minutes to 15 hours 59 minutes per day.

Monthly average temperatures in Glasgow, Montana, United States §

The warmest months in Glasgow are June, July and August, with daily mean temperatures ranging from 19 to 23 °C (67 - 75 °F) throughout the day. The coldest temperatures usually occur in January, February and December, when daily mean temperatures range from -11 to -6 °C (13 - 21 °F) throughout the day. On average each year, Glasgow experiences 71 days above 25 °C (77.0 °F) and 157 days below 0 °C (32.0 °F).

Monthly average temperatures with daily means, minimums and maximums for period, average high and low temperatures in Glasgow, Montana, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to June 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum 11°C
(52°F)		 15°C
(59°F)		 22°C
(72°F)		 28°C
(83°F)		 35°C
(95°F)		 42°C
(108°F)		 41°C
(105°F)		 42°C
(108°F)		 36°C
(98°F)		 30°C
(86°F)		 23°C
(74°F)		 19°C
(67°F)
Mean maximum 8°C
(47°F)		 10°C
(50°F)		 17°C
(63°F)		 25°C
(77°F)		 31°C
(88°F)		 33°C
(92°F)		 38°C
(101°F)		 38°C
(101°F)		 34°C
(93°F)		 25°C
(78°F)		 18°C
(64°F)		 12°C
(53°F)
Average high -4°C
(26°F)		 -5°C
(23°F)		 5°C
(41°F)		 12°C
(53°F)		 20°C
(68°F)		 26°C
(79°F)		 31°C
(88°F)		 29°C
(84°F)		 22°C
(71°F)		 12°C
(54°F)		 5°C
(40°F)		 -2°C
(30°F)
Daily mean -8°C
(18°F)		 -11°C
(13°F)		 -1°C
(30°F)		 5°C
(42°F)		 13°C
(56°F)		 19°C
(67°F)		 23°C
(75°F)		 22°C
(71°F)		 15°C
(59°F)		 6°C
(43°F)		 -1°C
(31°F)		 -6°C
(21°F)
Average low -13°C
(10°F)		 -16°C
(4°F)		 -6°C
(21°F)		 -0°C
(31°F)		 7°C
(44°F)		 13°C
(55°F)		 16°C
(60°F)		 14°C
(57°F)		 9°C
(48°F)		 1°C
(33°F)		 -5°C
(23°F)		 -11°C
(13°F)
Mean minimum -31°C
(-23°F)		 -30°C
(-22°F)		 -20°C
(-4°F)		 -11°C
(12°F)		 0°C
(32°F)		 7°C
(45°F)		 9°C
(49°F)		 8°C
(46°F)		 1°C
(33°F)		 -8°C
(17°F)		 -17°C
(2°F)		 -24°C
(-11°F)
Minimum -37°C
(-35°F)		 -36°C
(-33°F)		 -30°C
(-22°F)		 -18°C
(1°F)		 -3°C
(28°F)		 6°C
(44°F)		 6°C
(43°F)		 6°C
(44°F)		 -3°C
(27°F)		 -16°C
(3°F)		 -19°C
(-3°F)		 -35°C
(-30°F)

Compare climate in Glasgow with other places

Compare temperature, precipitation, sunshine, UV index in Glasgow, Montana, United States with other places around the world.

Monthly average precipitation in Glasgow, Montana, United States §

Glasgow usually has the most precipitation in May, June and September, with an average of 7 rainy days and 49 mm (1.9 inches) of precipitation per month.The driest months in Glasgow are January, October and December. On average, 17 mm (0.6 inches) of precipitation falls during these months.

Monthly average precipitation and precipitation days in Glasgow, Montana, United States.Generated using Copernicus Climate Change Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Average precipitation mm (inches) 9 (0.4) 24 (0.9) 22 (0.9) 24 (0.9) 36 (1.4) 57 (2.3) 24 (0.9) 34 (1.3) 54 (2.1) 22 (0.9) 24 (1.0) 19 (0.7)
Average precipitation days (≥ 1 mm) 3 5 5 5 7 8 5 4 6 5 5 4

Monthly sunshine hours in Glasgow, Montana, United States §

The sunniest months in Glasgow are June, July and August, when the sun shines an average of 11 hours 59 minutes a day.Least sunny months in Glasgow: January, November and December receive an average of 5 hours 33 minutes of sunshine daily.

Mean monthly sunshine duration, average sunshine hours per day and mean daily daylight hours in Glasgow, Montana, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2017 to January 2022.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Mean monthly sunshine hours 146 197 256 280 335 360 399 343 266 230 190 175
Mean daily daylight hours 8h 50m 10h 13m 11h 56m 13h 42m 15h 13m 15h 59m 15h 33m 14h 12m 12h 30m 10h 45m 9h 12m 8h 24m

Solar UV radiation in Glasgow, Montana, United States §

Glasgow experiences the highest level of ultraviolet (UV) radiation in June, July and August, when the maximum UV index can reach values of 9 - 10, which corresponds to the Very High category of sun exposure.January, February and December are in the Low / Moderate exposure category. In these months, the maximum values of the UV index do not exceed 3. For more detailed information, check out our hourly Glasgow UV Index data.

Average daily maximum UV levels by month for Glasgow, Montana, United States.Generated using Copernicus Atmosphere Monitoring Service information.Data for period from January 2022 to January 2023.
  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
UV Index (month maximum) 2 3 5 7 8 10 9 9 7 5 3 2