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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, the same as December, in Westby, Montana, is another subzero cold winter month, with temperature in the range of an average low of 7.2°F (-13.8°C) and an average high of 20.7°F (-6.3°C). The commencement of January introduces an average high-temperature of a still subzero cold 20.7°F (-6.3°C), closely mirroring the preceding month. Weather in January »
Weather in February
February, the last month of the winter in Westby, is also a subzero cold month, with an average temperature varying between 19.8°F (-6.8°C) and 6.3°F (-14.3°C). In Westby, Montana, the lowest temperatures are generally noted in February, averaging a high of 19.8°F (-6.8°C) and a low of 6.3°F (-14.3°C). Weather in February »
Weather in March
The first month of the spring, March, is a cold month in Westby, Montana, with temperature in the range of an average high of 35.4°F (1.9°C) and an average low of 20.8°F (-6.2°C). Westby in March showcases a distinct temperature shift, moving from an average high of a freezing cold 19.8°F (-6.8°C) in February to a wintry 35.4°F (1.9°C). Weather in March »
Weather in April
April in Westby, Montana, is a fresh spring month, with an average temperature varying between 50.2°F (10.1°C) and 33.6°F (0.9°C). As Westby welcomes April, the average high-temperature witnesses a distinct rise, moving from a cold 35.4°F (1.9°C) in March to a cool 50.2°F (10.1°C). Weather in April »
Weather in May
May, the last month of the spring in Westby, is a refreshing month, with temperature in the range of an average high of 64.2°F (17.9°C) and an average low of 46.4°F (8°C). May marks a rise in the average high-temperature, moving from April's fresh 50.2°F (10.1°C) to a refreshing 64.2°F (17.9°C). Weather in May »
Weather in June
June, the first month of the summer in Westby, is a warm month, with temperature in the range of an average low of 55.2°F (12.9°C) and an average high of 74.1°F (23.4°C). Westby in June shows a temperature shift, moving from an average high of an enjoyable 64.2°F (17.9°C) in May to a warm 74.1°F (23.4°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Westby, Montana, with an average temperature varying between 61°F (16.1°C) and 82°F (27.8°C). Westby witnesses the warmest weather in July, with temperatures averaging a high of 82°F (27.8°C) and a low of 61°F (16.1°C). For July, the heat index is calculated to be 82.4°F (28°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Westby, Montana, with an average temperature ranging between max 81.3°F (27.4°C) and min 60.6°F (15.9°C). The introduction of August notes a subtle temperature variation to a still moderately hot 81.3°F (27.4°C) from July's 82°F (27.8°C). Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Westby, Montana, with an average temperature ranging between min 52.3°F (11.3°C) and max 70°F (21.1°C). With September's arrival, Westby sees a decrease in average high-temperatures, moving from a moderately hot 81.3°F (27.4°C) in August to an agreeable 70°F (21.1°C). Weather in September »
Weather in October
October, like September, in Westby, Montana, is a cool autumn month, with an average temperature ranging between min 37.9°F (3.3°C) and max 52.7°F (11.5°C). October's arrival sees a clear drop in the average high-temperature, decreasing from September's pleasant 70°F (21.1°C) to a cool 52.7°F (11.5°C). Weather in October »
Weather in November
November, the last month of the autumn in Westby, is also a wintry month, with temperature in the range of an average high of 36.3°F (2.4°C) and an average low of 23.7°F (-4.6°C). Westby's November weather is characterized by a distinct downswing in high-temperatures, falling from October's fresh 52.7°F (11.5°C) to a wintry 36.3°F (2.4°C). Weather in November »
Weather in December
December, the first month of the winter in Westby, is also a subzero cold month, with temperature in the range of an average high of 21.9°F (-5.6°C) and an average low of 10°F (-12.2°C). December signals a considerable drop in Westby's average high-temperature, reducing from a cold 36.3°F (2.4°C) in November to a freezing cold 21.9°F (-5.6°C). Weather in December »
Updated: Feb 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the most humid months in Westby?
The months with the highest humidity in Westby, Montana, are January and February, with an average relative humidity of 88%.
How much does it rain in Westby?
Throughout the year, there are 93.3 rainfall days, and 12.01" (305mm) of precipitation is accumulated.
When does it snow in Westby?
January through May, October through December are months with snowfall.
How much does it snow in Westby?
In Westby, during the entire year, snow falls for 66.5 days and aggregates up to 19.02" (483mm) of snow.
What time of the year is the coldest in Westby?
The coldest period in Westby, Montana, is February, when temperatures fluctuate between an average high of 19.8°F (-6.8°C) and a low of 6.3°F (-14.3°C).
What is the driest month in Westby?
February is the month with the least rainfall. Rain falls for 2.6 days and accumulates 0.47" (12mm) of precipitation.
What is the month with the least sunshine in Westby?
The month with the least sunshine is February, with an average of 3.9h of sunshine.
What is the month with the lowest UV index in Westby?
The month with the lowest UV index is February, with an average maximum UV index of 1.
When is Daylight Saving Time (DST) in Westby?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the wettest month in Westby?
The month with the most rainfall is June, when the rain falls for 13.9 days and typically aggregates up to 2.17" (55mm) of precipitation.
When it does not snow in Westby?
June through September are months without snowfall in Westby, Montana.
When are the longest days in Westby?
June has the longest days of the year, with an average of 16h and 6min of daylight.
What is the warmest month in Westby?
Westby's temperature records reveal July as the warmest month, marked by average highs of 82°F (27.8°C) and lows of 61°F (16.1°C).
What month has the most sunshine in Westby?
With an average of 11.7h of sunshine, July has the most sunshine of the year in Westby, Montana.
What is the month with the highest UV index in Westby?
The month with the highest UV index in Westby, Montana, is July, with an average maximum UV index of 6.
What is the least humid month in Westby?
The least humid month in Westby is August, with an average relative humidity of 46%.
What is the snowiest month in Westby?
November is the month with the most snowfall in Westby, Montana. Snow falls for 7.6 days and accumulates 3.74" (95mm) of snow.
What is the month with the shortest days in Westby?
The month with the shortest days is December, with an average of 8h and 18min of daylight.
Average temperature
Westby, MT
The warmest month (with the highest average high temperature) is July (82°F).
The month with the lowest average high temperature is February (19.8°F).
The month with the highest average low temperature is July (61°F).
The coldest month (with the lowest average low temperature) is February (6.3°F).
Average pressure
Westby, MT
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.17"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.83"Hg
- Average pressure in July:
29.89"Hg - Average pressure in August:
29.89"Hg - Average pressure in September:
29.93"Hg - Average pressure in October:
29.96"Hg - Average pressure in November:
30.04"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed
Westby, MT
- Average wind speed in January:
10.4mph - Average wind speed in February:
9.2mph - Average wind speed in March:
10.1mph - Average wind speed in April:
11.1mph - Average wind speed in May:
10.6mph - Average wind speed in June:
10.2mph
- Average wind speed in July:
9.6mph - Average wind speed in August:
9.3mph - Average wind speed in September:
10.2mph - Average wind speed in October:
10.9mph - Average wind speed in November:
10.4mph - Average wind speed in December:
9.9mph
The windiest month (with the highest average wind speed) is April (11.1mph).
The calmest month (with the lowest average wind speed) is February (9.2mph).
Average humidity
Westby, MT
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is August (46%).
Average rainfall
Westby, MT
- Average rainfall in January:
0.51" - Average rainfall in February:
0.47" - Average rainfall in March:
0.55" - Average rainfall in April:
1.02" - Average rainfall in May:
1.57" - Average rainfall in June:
2.17"
- Average rainfall in July:
1.38" - Average rainfall in August:
0.87" - Average rainfall in September:
1.5" - Average rainfall in October:
0.79" - Average rainfall in November:
0.67" - Average rainfall in December:
0.51"
The wettest month (with the highest rainfall) is June (2.17").
The driest month (with the least rainfall) is February (0.47").
Average rainfall days
Westby, MT
- Average rainfall days in January:
3.3 days - Average rainfall days in February:
2.6 days - Average rainfall days in March:
7.3 days - Average rainfall days in April:
9.9 days - Average rainfall days in May:
12.5 days - Average rainfall days in June:
13.9 days
- Average rainfall days in July:
10.4 days - Average rainfall days in August:
9 days - Average rainfall days in September:
8.6 days - Average rainfall days in October:
7.6 days - Average rainfall days in November:
4.6 days - Average rainfall days in December:
3.6 days
The month with the highest number of rainy days is June (13.9 days).
The month with the least rainy days is February (2.6 days).
Average snowfall
Westby, MT
- Average snowfall in January:
2.87" - Average snowfall in February:
3.35" - Average snowfall in March:
2.32" - Average snowfall in April:
1.46" - Average snowfall in May:
0.51" - Average snowfall in June:
0"
The month with the highest snowfall is November (3.74").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Westby, MT
- Average snowfall days in January:
12.8 days - Average snowfall days in February:
13.5 days - Average snowfall days in March:
10.8 days - Average snowfall days in April:
4.8 days - Average snowfall days in May:
0.8 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
3.2 days - Average snowfall days in November:
7.6 days - Average snowfall days in December:
13 days
The month with the highest number of snowfall days is February (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Westby, MT
- Average daylight in January:
8h and 5min - Average daylight in February:
10h and 1min - Average daylight in March:
11h and 5min - Average daylight in April:
13h and 4min - Average daylight in May:
15h and 2min - Average daylight in June:
16h and 1min
- Average daylight in July:
15h and 4min - Average daylight in August:
14h and 2min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 1min - Average daylight in December:
8h and 2min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in January:
4h and 2min - Average sunshine in February:
3h and 5min - Average sunshine in March:
5h and 2min - Average sunshine in April:
8h and 2min - Average sunshine in May:
10h and 0min - Average sunshine in June:
10h and 5min
- Average sunshine in July:
11h and 4min - Average sunshine in August:
11h and 3min - Average sunshine in September:
9h and 5min - Average sunshine in October:
6h and 1min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 1min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is February (Average sunshine: 3h and 54min).
Average sunshine days
Westby, MT
- Average sunshine days in January:
17.2 days - Average sunshine days in February:
13.8 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
14 days - Average sunshine days in May:
16.6 days - Average sunshine days in June:
13.8 days
- Average sunshine days in July:
18 days - Average sunshine days in August:
20.1 days - Average sunshine days in September:
19.6 days - Average sunshine days in October:
19.7 days - Average sunshine days in November:
19 days - Average sunshine days in December:
17.2 days
The month with the most sunshine days is August (20.1 days).
The months with the least sunshine days are February and June (13.8 days).
Average UV index
Westby, MT
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is February (UV index 1).
Average cloud cover
Westby, MT
The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 19).
Average visibility
Westby, MT
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February, March and December (5mi).
Westby, Montana, USA
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