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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, like December, is a freezing cold winter month in Halfmoon, Montana, with an average temperature fluctuating between 27.1°F (-2.7°C) and 14.4°F (-9.8°C). The transition into January shows a subtle variation to a still subzero cold 27.1°F (-2.7°C) from December's 25.7°F (-3.5°C) in the average high-temperature. Weather in January »
Weather in February
February, the last month of the winter in Halfmoon, is also a subzero cold month, with an average temperature varying between 28.2°F (-2.1°C) and 13.5°F (-10.3°C). Halfmoon's weather in February displays an average high-temperature of a still subzero cold 28.2°F (-2.1°C), showing minor disparity from January's 27.1°F (-2.7°C). Weather in February »
Weather in March
March, the first month of the spring in Halfmoon, is a wintry month, with an average temperature fluctuating between 21.6°F (-5.8°C) and 36.1°F (2.3°C). March's onset witnesses a minor shift in the average high-temperature, moving from a subzero cold 28.2°F (-2.1°C) in February to an icy 36.1°F (2.3°C). Weather in March »
Weather in April
April in Halfmoon, Montana, is a chilly spring month, with an average temperature varying between 28°F (-2.2°C) and 46.6°F (8.1°C). As Halfmoon transitions into April, a rise in the average high-temperature is observed, moving from an icy 36.1°F (2.3°C) in March to a frosty 46.6°F (8.1°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Halfmoon, Montana, with an average temperature fluctuating between 35.2°F (1.8°C) and 59.5°F (15.3°C). May shows a rise in the average high-temperature, moving from April's frosty 46.6°F (8.1°C) to a moderate 59.5°F (15.3°C). Weather in May »
Weather in June
June, the first month of the summer in Halfmoon, is an enjoyable month, with an average temperature fluctuating between 41.2°F (5.1°C) and 66.4°F (19.1°C). In Halfmoon, the average high-temperature in June slightly rises, from a moderate 59.5°F (15.3°C) in May, to an enjoyable 66.4°F (19.1°C). Weather in June »
Weather in July
July in Halfmoon, Montana, is a moderately hot summer month, with an average temperature fluctuating between 45.1°F (7.3°C) and 77.9°F (25.5°C). In Halfmoon, the month of July registers the highest temperatures, averaging 77.9°F (25.5°C) at the peak and 45.1°F (7.3°C) at the lowest. Weather in July »
Weather in August
August, the last month of the summer in Halfmoon, is another warm month, with an average temperature varying between 76.8°F (24.9°C) and 45.5°F (7.5°C). August's advent notes a subtle adjustment in average high-temperature to a still warm 76.8°F (24.9°C) from July. Weather in August »
Weather in September
September, the first month of the autumn in Halfmoon, is still a refreshing month, with an average temperature ranging between min 39.2°F (4°C) and max 65.5°F (18.6°C). Transition from August to September is accompanied by a temperature drop, with average high-temperatures decreasing from a moderately hot 76.8°F (24.9°C) to an enjoyable 65.5°F (18.6°C). Weather in September »
Weather in October
October, the same as September, in Halfmoon, Montana, is a frosty autumn month, with an average temperature ranging between min 30.7°F (-0.7°C) and max 48.4°F (9.1°C). October's arrival is marked by a notable drop in high-temperatures, falling from a comfortable 65.5°F (18.6°C) in September to a frosty 48.4°F (9.1°C). Weather in October »
Weather in November
November, the last month of the autumn in Halfmoon, is also a wintry month, with an average temperature ranging between min 23°F (-5°C) and max 34.5°F (1.4°C). Halfmoon's November weather shows a moderate shift in high-temperatures, falling from October's frosty 48.4°F (9.1°C) to a wintry 34.5°F (1.4°C). Weather in November »
Weather in December
December, the first month of the winter in Halfmoon, is still a freezing cold month, with an average temperature varying between 25.7°F (-3.5°C) and 13.8°F (-10.1°C). December is the month when Halfmoon experiences its coldest temperatures, averaging a high of 25.7°F (-3.5°C) and a low of 13.8°F (-10.1°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 is the most humid month in Halfmoon?
January is the most humid month in Halfmoon, with an average relative humidity of 93%.
How many days does it rain in Halfmoon?
In Halfmoon, during the entire year, the rain falls for 126.4 days and collects up to 11.22" (285mm) of precipitation.
When does it snow in Halfmoon?
January through May, September through December are months with snowfall in Halfmoon, Montana.
When does it snow the most in Halfmoon?
The month with the most snowfall is January, when snow falls for 18.9 days and typically aggregates up to 7.72" (196mm) of snow.
How much does it snow in Halfmoon?
Throughout the year, there are 97 snowfall days, and 33.86" (860mm) of snow is accumulated.
What is the month with the least sunshine in Halfmoon?
The month with the least sunshine in Halfmoon is January, with an average of 3.5h of sunshine.
When is the lowest UV index in Halfmoon?
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Halfmoon, Montana.
When is Daylight Saving Time (DST) in Halfmoon?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Halfmoon, Montana, 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 in Halfmoon?
June is the month with the most rainfall in Halfmoon. Rain falls for 13.7 days and accumulates 1.42" (36mm) of precipitation.
When it does not snow in Halfmoon?
In Halfmoon, snow does not fall in June through August.
When are the longest days in Halfmoon?
June has the longest days of the year, with an average of 16h and 0min of daylight.
What are the warmest months in Halfmoon?
The average temperatures in Halfmoon, Montana, reach their apex in July, averaging 77.9°F (25.5°C) at the high end and 45.1°F (7.3°C) at the low end.
What month has the most sunshine in Halfmoon?
The month with the most sunshine in Halfmoon is July, with an average of 11.9h of sunshine.
What is the month with the highest UV index in Halfmoon?
The month with the highest UV index in Halfmoon is July, with an average maximum UV index of 6.
What is the least humid month in Halfmoon?
August is the least humid month, with an average relative humidity of 55%.
What is the driest month in Halfmoon?
August is the month with the least rainfall. Rain falls for 6.3 days and accumulates 0.43" (11mm) of precipitation.
What is the coldest time of year in Halfmoon?
In Halfmoon, the average lowest temperatures are observed in December, with a high of 25.7°F (-3.5°C) and a low of 13.8°F (-10.1°C).
What is the month with the shortest days in Halfmoon?
With an average of 8h and 24min of daylight, December has the shortest days of the year in Halfmoon, Montana.
Average temperature
Halfmoon, MT
The warmest month (with the highest average high temperature) is July (77.9°F).
The month with the lowest average high temperature is December (25.7°F).
The month with the highest average low temperature is August (45.5°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure
Halfmoon, MT
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.98"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.15"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Halfmoon, MT
- Average wind speed in January:
3.9mph - Average wind speed in February:
4mph - Average wind speed in March:
4.3mph - Average wind speed in April:
4.6mph - Average wind speed in May:
4.4mph - Average wind speed in June:
4.3mph
The windiest month (with the highest average wind speed) is April (4.6mph).
The calmest months (with the lowest average wind speed) are August and December (3.7mph).
Average humidity
Halfmoon, MT
The month with the highest relative humidity is January (93%).
The month with the lowest relative humidity is August (55%).
Average rainfall
Halfmoon, MT
- Average rainfall in January:
1.02" - Average rainfall in February:
0.87" - Average rainfall in March:
1.14" - Average rainfall in April:
0.98" - Average rainfall in May:
1.1" - Average rainfall in June:
1.42"
- Average rainfall in July:
0.47" - Average rainfall in August:
0.43" - Average rainfall in September:
0.71" - Average rainfall in October:
0.91" - Average rainfall in November:
1.14" - Average rainfall in December:
1.02"
The wettest month (with the highest rainfall) is June (1.42").
The driest month (with the least rainfall) is August (0.43").
Average rainfall days
Halfmoon, MT
- Average rainfall days in January:
8.3 days - Average rainfall days in February:
7.7 days - Average rainfall days in March:
13.5 days - Average rainfall days in April:
15.8 days - Average rainfall days in May:
13.8 days - Average rainfall days in June:
13.7 days
- Average rainfall days in July:
6.9 days - Average rainfall days in August:
6.3 days - Average rainfall days in September:
8.5 days - Average rainfall days in October:
11.5 days - Average rainfall days in November:
11.5 days - Average rainfall days in December:
8.9 days
The month with the highest number of rainy days is April (15.8 days).
The month with the least rainy days is August (6.3 days).
Average snowfall
Halfmoon, MT
- Average snowfall in January:
7.72" - Average snowfall in February:
6.26" - Average snowfall in March:
5.08" - Average snowfall in April:
2.09" - Average snowfall in May:
0.55" - Average snowfall in June:
0"
The month with the highest snowfall is January (7.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Halfmoon, MT
- Average snowfall days in January:
18.9 days - Average snowfall days in February:
17.3 days - Average snowfall days in March:
15.7 days - Average snowfall days in April:
7.4 days - Average snowfall days in May:
1.5 days - Average snowfall days in June:
0.1 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0.3 days - Average snowfall days in October:
3.5 days - Average snowfall days in November:
13.2 days - Average snowfall days in December:
19.1 days
The month with the highest number of snowfall days is December (19.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Halfmoon, 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 1min - Average daylight in June:
16h and 0min
- 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 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January:
3h and 3min - Average sunshine in February:
4h and 4min - Average sunshine in March:
6h and 1min - Average sunshine in April:
8h and 4min - Average sunshine in May:
10h and 2min - Average sunshine in June:
10h and 2min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 4min - Average sunshine in September:
9h and 2min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 0min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Halfmoon, MT
- Average sunshine days in January:
11.3 days - Average sunshine days in February:
10 days - Average sunshine days in March:
7.7 days - Average sunshine days in April:
9.8 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
21.5 days - Average sunshine days in August:
21.4 days - Average sunshine days in September:
19 days - Average sunshine days in October:
15.5 days - Average sunshine days in November:
11.6 days - Average sunshine days in December:
11.8 days
The month with the most sunshine days is July (21.5 days).
The month with the least sunshine days is March (7.7 days).
Average UV index
Halfmoon, MT
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover
Halfmoon, MT
The month with the most cloud cover is January (Cloud cover 65).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility
Halfmoon, MT
The months with the highest visibility are May, June, July, August, September and October (6mi).
The month with the lowest visibility is January (3mi).
Halfmoon, Montana, USA
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