Climate and monthly weather forecast
Glasgow, MT

Share

The climate of Glasgow

Based on the Köppen Climate Classification, Glasgow, Montana, is categorized under the BSk or Mid-latitude Steppe climate. This specific climate is characterized by semi-arid conditions. Consequently, Glasgow experiences low annual rainfall and a substantial temperature differential between winter and summer.

Across the year, weather patterns follow a clear and generally predictable trajectory. January are the coldest months with average low temperatures of 10.9°F (-11.7°C) and high temperatures averaging around 24.3°F (-4.3°C). In stark contrast, July experiences the heat of summer, with high temperatures averaging 83.1°F (28.4°C) and lows around 63.3°F (17.4°C).

Glasgow's annual rainfall is relatively modest with many months seeing just light precipitation. June and May happen to be the wettest periods, recording an average rainfall of 2.01" (51mm) and 1.85" (47mm), respectively. Other months receive less than 1 inch on average.

The best time to visit Glasgow

The favorable months to visit Glasgow, Montana, tend to be from May to July. During these months, the city experiences both longer daylight hours, extending up to 16 hours in June, and warmer temperatures. The high averages span from 64.6°F (18.1°C) in May, escalating to 81.7°F (27.6°C) in August. Lower relative humidity in these months, typically hovering around 51% to 44% from May to July, will likely make outdoor sightseeing and recreation more comfortable.

The worst time to visit Glasgow

December and January are arguably the least desirable months for visitors due to their harsh winter conditions. The average high and low temperature range between 24.6°F (-4.1°C) and 10.9°F (-11.7°C) in these months. Snowfall is probable, with an average of 1.93" (49mm) in December and 2.17" (55mm) in January. Moreover, daylight hours decrease significantly during winter, with an average of 8.4 to 8.9 hours. The cold, darker days may limit outdoor activities.

Spring weather in Glasgow

Spring months in Glasgow, from March to May, bring a gradual increase in temperature. High temperatures can go from a brisk 38.3°F (3.5°C) in March to more moderate 64.6°F (18.1°C) by May. Low temperatures range between 23.9°F (-4.5°C) to 46.9°F (8.3°C). Rainfall is slightly more frequent in spring, particularly in May which records an average of 1.85" (47mm).

Summer weather in Glasgow

From June to August, summer in Glasgow, Montana, is relatively warm with high temperatures ranging from 74.7°F (23.7°C) to 83.1°F (28.4°C). Low temperatures during the night do not drop below 55.9°F (13.3°C). It is also wetter during this season with an average maximum rainfall of 2.01" (51mm) in June.

Autumn weather in Glasgow

Autumn in Glasgow features declining temperatures from September to November. High temperatures fall from 70.2°F (21.2°C) in September to 38.3°F (3.5°C) by November. Similarly, low temperatures sink from 53.8°F (12.1°C) in September to a chilly 25.7°F (-3.5°C) in November. Rainfall is relatively little, and decreases as the season progresses, from 1.1" (28mm) in September to 0.47" (12mm) by November.

Winter weather in Glasgow

The winter months are cold and marked by fluctuations in temperature. December records high temperatures averaging 24.6°F (-4.1°C) and lows at 12.7°F (-10.7°C). January sees similar averages with highs of 24.3°F (-4.3°C) and lows at 10.9°F (-11.7°C). Snowfall is common, with December and January recording averages of 1.93" (49mm) and 2.17" (55mm), respectively. The hours of daylight are quite limited, hovering around 8.9 hours in December and dipping to 8.4 hours in January.

Weather in January

Glasgow, Montana, displays typical winter patterns during January, with the potential for cold conditions. Snow is considered a regular occurrence this time of year, and the ground rarely thaws completely during daylight hours. Weather in January »

Weather in February

February continues the cold trend set in January with temperatures on the lower end of the gauge. Minimal daylight hours and elevated levels of humidity are common during this month. Although marginally warmer than January, temperatures vary from 10.2°F (-12.1°C) to 23.7°F (-4.6°C) in February. Weather in February »

Weather in March

As the last vestiges of winter faded, March in Glasgow, Montana, experiences somewhat warmer weather. More substantial shift occurs when comparing it to the harsh weather of February. Daily temperatures increase significantly, now extending from 23.9°F (-4.5°C) to 38.3°F (3.5°C). Weather in March »

Weather in April

Warmer weather fully takes charge in April, with its arrival marking the end of Glasgow's lengthy cold spell. It is unmistakably milder than March, as temperature fluctuations become less severe. The thermometers shift between lows and highs from 36°F (2.2°C) to 52.2°F (11.2°C). Weather in April »

Weather in May

The month of May encourages outdoor pursuits in Glasgow, Montana. The rise in temperatures and increasing daylight hours make this period enjoyable. In comparison to April, the temperatures are higher, and rainfall is more prevalent, creating lush and colorful landscapes. Weather in May »

Weather in June

June directly contrasts December as Glasgow, Montana, experiences its summertime zenith. Days are longest in the year, offering prolonged sunlight exposure and increase in UV indices. Still, a steep difference in day-time to night-time temperatures is observable, varying from 55.9°F (13.3°C) to 74.7°F (23.7°C). Weather in June »

Weather in July

July officially marks Glasgow's peak summer month, displaying remarkable warmth and vibrant outdoor activity. Throughout this month, residents and tourists can experience weather differences that shift from 63.3°F (17.4°C) to 83.1°F (28.4°C). Weather in July »

Weather in August

The heatwave initiated by July extends into August, maintaining the hot Glasgow summer. However, a slight decrease in temperatures may be felt, hinting at the upcoming autumn season. Temperatures in August range from 62.4°F (16.9°C) to 81.7°F (27.6°C), still comfortable for outdoor enjoyment. Weather in August »

Weather in September

September in Glasgow, Montana, provides early signs of autumn with cooler temperatures and changing colors. A substantial decrease in temperature signifies a stark contrast with its predecessor, August. The temperature descends from the highs and lows of 53.8°F (12.1°C) to 70.2°F (21.2°C). Weather in September »

Weather in October

October amplifies autumn's presence with falling leaves and much cooler weather. A sense of tranquility fills the air of Glasgow as frenzied summer activities dwindle. Compared to September, temperatures experience a sharp drop, now fluctuating between 39.6°F (4.2°C) to 53.8°F (12.1°C). Weather in October »

Weather in November

November moves Glasgow, Montana, further into the shadow of winter with dropping temperatures and increased snowfall. Significant disparities in weather are noticed between November and October, making it necessary to modify wardrobe and activities. Weather in November »

Weather in December

December embodies the essence of winter in Glasgow, Montana, as the weather turns significantly cold, and the landscape gets blanketed in snow. A minimal temperature rise occurs when comparing it to colder November, establishing an average between 12.7°F (-10.7°C) to 24.6°F (-4.1°C). Weather in December »
Updated: Aug 14, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the most humid month?

The most humid month is January, with an average relative humidity of 86%.

What is the driest month?

January and February are months with the least rain in Glasgow, Montana, when the rain falls for 2.5 days and typically aggregates up to 0.35" (9mm) of rain.

How many days does it rain?

In Glasgow, during the entire year, the rain falls for 90.8 days and collects up to 11.1" (282mm) of precipitation.

When does it snow?

Months with snowfall are January through May, October through December.

How much does it snow?

Throughout the year, there are 43.8 snowfall days, and 13.11" (333mm) of snow is accumulated.

What month is the coldest?

February stands out as Glasgow's coldest month, with an average high-temperature of 23.7°F (-4.6°C) and a low-temperature of 10.2°F (-12.1°C).

What is the month with the least sunshine?

With an average of 4.7h of sunshine, February has the least sunshine of the year.

When is Daylight Saving Time (DST)?

On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from MST to MDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from MDT to MST.

What is the wettest month?

June is the month with the most rainfall. Rain falls for 13.2 days and accumulates 2.01" (51mm) of precipitation.

When it does not snow?

June through September are months without snowfall.

When are the longest days?

With an average of 16h and 0min of daylight, June has the longest days of the year.

What are the warmest months in Glasgow?

Glasgow's temperatures tend to reach their peak averages in July, with a high of 83.1°F (28.4°C) and a low of 63.3°F (17.4°C).

What month has the most sunshine?

The month with the most sunshine is July, with an average of 11.8h of sunshine.

When is the highest UV index?

July is the month with the highest UV index, with an average maximum UV index of 7.

What is the least humid month in Glasgow?

The least humid month is August, with an average relative humidity of 42%.

When does it snow the most?

December is the month with the most snowfall. Snow falls for 8.6 days and accumulates 2.6" (66mm) of snow.

What is the month with the shortest days?

The month with the shortest days is December, with an average of 8h and 24min of daylight.

What is the month with the lowest UV index?

December is the month with the lowest UV index, with an average maximum UV index of 1.

Average temperature
Glasgow, MT

Average temperature - Glasgow, MT

The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is February (23.7°F).

The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is February (10.2°F).

Average pressure
Glasgow, MT

Average pressure - Glasgow, MT

The month with the highest atmospheric pressure is February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

Average wind speed
Glasgow, MT

Average wind speed - Glasgow, MT

The windiest month (with the highest average wind speed) is April (11.7mph).
The calmest month (with the lowest average wind speed) is February (8.8mph).

Average humidity
Glasgow, MT

Average humidity - Glasgow, MT

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is August (42%).

Average rainfall
Glasgow, MT

Average rainfall - Glasgow, MT

The wettest month (with the highest rainfall) is June (2.01").
The driest months (with the least rainfall) are January and February (0.35").

Average rainfall days
Glasgow, MT

Average rainfall days - Glasgow, MT

The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (2.3 days).

Average snowfall
Glasgow, MT

Average snowfall - Glasgow, MT

The month with the highest snowfall is December (2.6").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days
Glasgow, MT

Average snowfall days - Glasgow, MT

The month with the highest number of snowfall days is February (9.2 days).
The months with the least snowfall days are June, July and August (0 days).

Average daylight / Average sunshine
Glasgow, MT

Average daylight / Average sunshine - Glasgow, MT

The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).

The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 42min).

Average sunshine days
Glasgow, MT

Average sunshine days - Glasgow, MT

The month with the most sunshine days is November (21.5 days).
The month with the least sunshine days is June (13.8 days).

Average visibility
Glasgow, MT

Average visibility - Glasgow, MT

The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

Glasgow, Montana, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location