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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 another subzero cold winter month in Big Arm, Montana, with an average temperature ranging between min 17.8°F (-7.9°C) and max 29.7°F (-1.3°C). As December transitions into January, the average high-temperature rests at a still freezing cold 29.7°F (-1.3°C), maintaining a close resemblance to the previous month. Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Big Arm, Montana, with an average temperature varying between 17.4°F (-8.1°C) and 30.6°F (-0.8°C). February's arrival shows an average high-temperature of a still subzero cold 30.6°F (-0.8°C), hardly different from the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a wintry month in Big Arm, Montana, with an average temperature varying between 38.8°F (3.8°C) and 24.3°F (-4.3°C). Big Arm's transition into March is noticed by a slight rise in the average high-temperature, advancing from a subzero cold 30.6°F (-0.8°C) in February to a wintry 38.8°F (3.8°C). Weather in March »
Weather in April
April in Big Arm, Montana, is a frosty spring month, with an average temperature varying between 48.7°F (9.3°C) and 30.2°F (-1°C). In April, the meteorological conditions change with the average high-temperature moving from a cold 38.8°F (3.8°C) in March to a frosty 48.7°F (9.3°C). Weather in April »
Weather in May
The last month of the spring, May, is a mild month in Big Arm, Montana, with an average temperature fluctuating between 60.4°F (15.8°C) and 36.9°F (2.7°C). The start of May brings a rise in the average high-temperature, moving from a chilly 48.7°F (9.3°C) in April to a mild 60.4°F (15.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a pleasant month in Big Arm, Montana, with an average temperature fluctuating between 68°F (20°C) and 43.3°F (6.3°C). The shift into June is marked by a modest rise in the average high-temperature, moving from May's refreshing 60.4°F (15.8°C) to a pleasant 68°F (20°C). Weather in June »
Weather in July
July in Big Arm, Montana, is a moderately hot summer month, with an average temperature varying between 48.9°F (9.4°C) and 79.3°F (26.3°C). Big Arm's temperatures peak on average in July, reaching 79.3°F (26.3°C) at their highest and 48.9°F (9.4°C) at their lowest. Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Big Arm, Montana, with an average temperature ranging between min 48.9°F (9.4°C) and max 78.6°F (25.9°C). The advent of August signifies a minor shift to an average high-temperature of a still warm 78.6°F (25.9°C), aligning closely with July. Weather in August »
Weather in September
The first month of the autumn, September, is also an enjoyable month in Big Arm, Montana, with an average temperature varying between 42.3°F (5.7°C) and 67.6°F (19.8°C). September brings a decrease in the average high-temperature, shifting from a moderately hot 78.6°F (25.9°C) in August to a refreshing 67.6°F (19.8°C). Weather in September »
Weather in October
October, the same as September, is another fresh autumn month in Big Arm, Montana, with an average temperature varying between 51.1°F (10.6°C) and 33.1°F (0.6°C). Big Arm, Montana, in October showcases a distinct temperature shift, moving from an average high of a comfortable 67.6°F (19.8°C) in September to a fresh 51.1°F (10.6°C). Weather in October »
Weather in November
November, the last month of the autumn in Big Arm, is also a wintry month, with temperature in the range of an average high of 37.2°F (2.9°C) and an average low of 24.6°F (-4.1°C). November brings a drop in Big Arm's average high-temperature, falling from a cool 51.1°F (10.6°C) in October to an icy 37.2°F (2.9°C). Weather in November »
Weather in December
December, the first month of the winter in Big Arm, is still a freezing cold month, with an average temperature ranging between max 27.9°F (-2.3°C) and min 16.7°F (-8.5°C). With its high average temperature of 27.9°F (-2.3°C) and a low of 16.7°F (-8.5°C), December is regarded as the coldest month. Weather in December »
Updated: Aug 27, 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?
The most humid month is January, with an average relative humidity of 91%.
How many days does it rain in Big Arm?
Throughout the year, there are 160.2 rainfall days, and 18.11" (460mm) of precipitation is accumulated.
When does it snow?
January through May, September through December are months with snowfall.
How many days does it snow?
Throughout the year, in Big Arm, there are 99 snowfall days, and 47.28" (1201mm) of snow is accumulated.
What is the month with the least sunshine in Big Arm?
With an average of 4.5h of sunshine, January has the least sunshine of the year.
When is the lowest UV index?
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.
What is the snowiest month?
February is the month with the most snowfall. Snow falls for 19.2 days and accumulates 10.28" (261mm) of snow.
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 rainiest month?
The month with the most rainfall in Big Arm is June, when the rain falls for 15.6 days and typically aggregates up to 2.2" (56mm) of precipitation.
When it does not snow?
In Big Arm, snow does not fall in June through August.
When are the longest days?
With an average of 15h and 54min of daylight, June has the longest days of the year.
When is the highest UV index?
June and July, with an average maximum UV index of 5, are months with the highest UV index.
What part of the year is the hottest?
The temperatures reach their highest averages in July, with highs of 79.3°F (26.3°C) and lows of 48.9°F (9.4°C).
What is the driest month?
July and August are months with the least rain when the rain falls for 7.5 days and typically aggregates up to 0.55" (14mm) of rain.
What month has the most sunshine?
July has the most sunshine of the year, with an average of 11.9h of sunshine.
What is the least humid month?
With an average relative humidity of 51%, August is the least humid month.
What is the coldest month?
With its average high temperature of 27.9°F (-2.3°C) and a low of 16.7°F (-8.5°C), December is regarded as the coldest month.
What is the month with the shortest days?
With an average of 8h and 30min of daylight, December has the shortest days of the year.
Average temperature
Big Arm, MT
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (27.9°F).
The months with the highest average low temperature are July and August (48.9°F).
The coldest month (with the lowest average low temperature) is December (16.7°F).
Average pressure
Big Arm, MT
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.16"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Big Arm, MT
- Average wind speed in January:
4mph - Average wind speed in February:
4.3mph - Average wind speed in March:
4.5mph - Average wind speed in April:
4.8mph - Average wind speed in May:
4.4mph - Average wind speed in June:
4.4mph
- Average wind speed in July:
4mph - Average wind speed in August:
3.7mph - Average wind speed in September:
3.9mph - Average wind speed in October:
4.2mph - Average wind speed in November:
4.3mph - Average wind speed in December:
4mph
The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity
Big Arm, MT
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (51%).
Average rainfall
Big Arm, MT
- Average rainfall in January:
1.69" - Average rainfall in February:
1.73" - Average rainfall in March:
1.89" - Average rainfall in April:
2.05" - Average rainfall in May:
1.69" - Average rainfall in June:
2.2"
- Average rainfall in July:
0.55" - Average rainfall in August:
0.55" - Average rainfall in September:
0.94" - Average rainfall in October:
1.54" - Average rainfall in November:
1.57" - Average rainfall in December:
1.69"
The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are July and August (0.55").
Average rainfall days
Big Arm, MT
- Average rainfall days in January:
12.4 days - Average rainfall days in February:
12.1 days - Average rainfall days in March:
18.8 days - Average rainfall days in April:
18.8 days - Average rainfall days in May:
15.4 days - Average rainfall days in June:
15.6 days
- Average rainfall days in July:
7.5 days - Average rainfall days in August:
7 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
14.5 days - Average rainfall days in November:
14.5 days - Average rainfall days in December:
12.9 days
The months with the highest number of rainy days are March and April (18.8 days).
The month with the least rainy days is August (7 days).
Average snowfall
Big Arm, MT
- Average snowfall in January:
10.24" - Average snowfall in February:
10.28" - Average snowfall in March:
6.14" - Average snowfall in April:
3.27" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is February (10.28").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Big Arm, MT
- Average snowfall days in January:
19.7 days - Average snowfall days in February:
19.2 days - Average snowfall days in March:
14.5 days - Average snowfall days in April:
8.3 days - Average snowfall days in May:
0.7 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:
0.2 days - Average snowfall days in October:
3.4 days - Average snowfall days in November:
13.2 days - Average snowfall days in December:
19.8 days
The month with the highest number of snowfall days is December (19.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Big Arm, MT
- Average daylight in January:
8h and 5min - Average daylight in February:
10h and 2min - 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:
15h and 5min
- Average daylight in July:
15h and 3min - Average daylight in August:
14h and 1min - Average daylight in September:
12h and 4min - Average daylight in October:
10h and 5min - Average daylight in November:
9h and 2min - Average daylight in December:
8h and 3min
The month with the longest days is June (Average daylight: 15h and 54min).
The month with the shortest days is December (Average daylight: 8h and 30min).
- Average sunshine in January:
4h and 3min - Average sunshine in February:
5h and 2min - Average sunshine in March:
7h and 0min - Average sunshine in April:
8h and 5min - Average sunshine in May:
10h and 3min - Average sunshine in June:
10h and 4min
- 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 5min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Big Arm, MT
- Average sunshine days in January:
9.3 days - Average sunshine days in February:
6.5 days - Average sunshine days in March:
6.4 days - Average sunshine days in April:
7.7 days - Average sunshine days in May:
12.1 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
21.3 days - Average sunshine days in August:
19.9 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
13.7 days - Average sunshine days in November:
10.1 days - Average sunshine days in December:
9.5 days
The month with the most sunshine days is July (21.3 days).
The month with the least sunshine days is March (6.4 days).
Average UV index
Big Arm, MT
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover
Big Arm, MT
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 14).
Average visibility
Big Arm, MT
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
Big Arm, Montana, USA
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