Expand
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 Plains, Montana, is a freezing cold winter month, with an average temperature fluctuating between 30.7°F (-0.7°C) and 17.6°F (-8°C). The arrival of January records an average high-temperature of a still subzero cold 30.7°F (-0.7°C), closely related to the 28.9°F (-1.7°C) observed in December. Weather in January »
Weather in February
February, the last month of the winter in Plains, is another freezing cold month, with an average temperature varying between 31.6°F (-0.2°C) and 17.2°F (-8.2°C). The ushering in of February brings an average high-temperature of a still freezing cold 31.6°F (-0.2°C), closely mirroring the 30.7°F (-0.7°C) of January. Weather in February »
Weather in March
The first month of the spring, March, is a cold month in Plains, Montana, with an average temperature varying between 38.8°F (3.8°C) and 22.6°F (-5.2°C). The shift into March is accompanied by a modest temperature increase, with the average high-temperature edging up from a freezing cold 31.6°F (-0.2°C) in February to a wintry 38.8°F (3.8°C). Weather in March »
Weather in April
April in Plains, Montana, is a frosty spring month, with an average temperature varying between 47.1°F (8.4°C) and 27.9°F (-2.3°C). The onset of April introduces a subtle rise in the average high-temperature, nudging from a cold 38.8°F (3.8°C) in March to a frosty 47.1°F (8.4°C). Weather in April »
Weather in May
The last month of the spring, May, is a refreshing month in Plains, Montana, with an average temperature ranging between min 34.3°F (1.3°C) and max 60.1°F (15.6°C). May comes with an increase, with the average high-temperature moving from a frosty 47.1°F (8.4°C) in April to a mild 60.1°F (15.6°C). Weather in May »
Weather in June
June, the first month of the summer in Plains, is a comfortable month, with temperature in the range of an average low of 40.3°F (4.6°C) and an average high of 66.9°F (19.4°C). June brings a slight increase in the average high-temperature, progressing from a mild 60.1°F (15.6°C) in May to an enjoyable 66.9°F (19.4°C). Weather in June »
Weather in July
July in Plains, Montana, is a warm summer month, with an average temperature ranging between max 78.8°F (26°C) and min 45.1°F (7.3°C). During July and August, Plains experiences its warmest period, with an average high-temperature of 78.8°F (26°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Plains, Montana, with an average temperature varying between 45.7°F (7.6°C) and 78.8°F (26°C). During July and August, Plains registers its highest temperatures, averaging a high of 78.8°F (26°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a comfortable month in Plains, Montana, with an average temperature ranging between max 67.3°F (19.6°C) and min 39.7°F (4.3°C). Onset of September comes with a temperature decline, the average high falling from a warm 78.8°F (26°C) in August to a refreshing 67.3°F (19.6°C). Weather in September »
Weather in October
October, like September, in Plains, Montana, is another fresh autumn month, with an average temperature ranging between min 31.1°F (-0.5°C) and max 51.4°F (10.8°C). October witnesses a clear temperature decrease, falling from a refreshing 67.3°F (19.6°C) in September to a fresh 51.4°F (10.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a wintry month in Plains, Montana, with an average temperature varying between 37.9°F (3.3°C) and 23.9°F (-4.5°C). Welcoming November, Plains observes a shift in the average high-temperature, falling from October's fresh 51.4°F (10.8°C) to an icy 37.9°F (3.3°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Plains, Montana, with an average temperature fluctuating between 28.9°F (-1.7°C) and 16.2°F (-8.8°C). During the coldest month, December, temperatures average a high of 28.9°F (-1.7°C) and a low of 16.2°F (-8.8°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 Plains?
The most humid month in Plains is January, with an average relative humidity of 93%.
What is the rainiest month in Plains?
The month with the most rainfall in Plains is January, when the rain falls for 13.3 days and typically aggregates up to 3.11" (79mm) of precipitation.
How many days does it rain in Plains?
Throughout the year, there are 152.1 rainfall days, and 22.09" (561mm) of precipitation is accumulated.
When does it snow in Plains?
January through May, September through December are months with snowfall.
How much does it snow in Plains?
Throughout the year, in Plains, there are 90.2 snowfall days, and 58.15" (1477mm) of snow is accumulated.
What is the month with the least sunshine in Plains?
With an average of 3.5h of sunshine, January has the least sunshine of the year.
What are the months with the lowest UV index in Plains?
The months with the lowest UV index in Plains are January, February, November and December, with an average maximum UV index of 1.
What is the snowiest month in Plains?
February is the month with the most snowfall. Snow falls for 17.9 days and accumulates 15.12" (384mm) of snow.
When is Daylight Saving Time (DST) in Plains?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Plains, 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.
When it does not snow in Plains?
In Plains, snow does not fall in June through August.
When are the longest days in Plains?
The month with the longest days in Plains, Montana, is June, with an average of 15h and 54min of daylight.
What month is the hottest in Plains?
July and August mark Plains's peak of temperatures, averaging a high-temperature of 78.8°F (26°C).
What are the least humid months in Plains?
The months with the lowest humidity in Plains, Montana, are July and August, with an average relative humidity of 53%.
What month has the most sunshine in Plains?
July has the most sunshine of the year, with an average of 11.8h of sunshine.
When is the highest UV index in Plains?
With an average maximum UV index of 6, July is the month with the highest UV index in Plains.
What is the driest month in Plains?
August is the month with the least rainfall in Plains. Rain falls for 5.9 days and accumulates 0.39" (10mm) of precipitation.
What are the coldest months in Plains?
December is the month when Plains, Montana, sees the average lowest temperatures, with a high of 28.9°F (-1.7°C) and a low of 16.2°F (-8.8°C).
What is the month with the shortest days in Plains?
The month with the shortest days in Plains is December, with an average of 8h and 30min of daylight.
Average temperature
Plains, MT
The warmest months (with the highest average high temperature) are July and August (78.8°F).
The month with the lowest average high temperature is December (28.9°F).
The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is December (16.2°F).
Average pressure
Plains, MT
- Average pressure in January:
30.19"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
30"Hg - Average pressure in May:
29.96"Hg - Average pressure in June:
29.93"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:
30.06"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Plains, MT
- Average wind speed in January:
4.2mph - Average wind speed in February:
4.2mph - Average wind speed in March:
4.5mph - Average wind speed in April:
4.9mph - Average wind speed in May:
4.4mph - Average wind speed in June:
4.7mph
- Average wind speed in July:
4.4mph - Average wind speed in August:
4.1mph - Average wind speed in September:
4.2mph - Average wind speed in October:
4.2mph - Average wind speed in November:
4.2mph - Average wind speed in December:
4mph
The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest month (with the lowest average wind speed) is December (4mph).
Average humidity
Plains, MT
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall
Plains, MT
- Average rainfall in January:
3.11" - Average rainfall in February:
2.76" - Average rainfall in March:
2.83" - Average rainfall in April:
2.24" - Average rainfall in May:
1.57" - Average rainfall in June:
1.3"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.39" - Average rainfall in September:
0.59" - Average rainfall in October:
1.77" - Average rainfall in November:
2.09" - Average rainfall in December:
2.99"
The wettest month (with the highest rainfall) is January (3.11").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days
Plains, MT
- Average rainfall days in January:
13.3 days - Average rainfall days in February:
12.3 days - Average rainfall days in March:
19.9 days - Average rainfall days in April:
19.2 days - Average rainfall days in May:
14.4 days - Average rainfall days in June:
12.6 days
- Average rainfall days in July:
6.3 days - Average rainfall days in August:
5.9 days - Average rainfall days in September:
7.8 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
15.5 days - Average rainfall days in December:
12.2 days
The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (5.9 days).
Average snowfall
Plains, MT
- Average snowfall in January:
13.82" - Average snowfall in February:
15.12" - Average snowfall in March:
7.83" - Average snowfall in April:
2.17" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is February (15.12").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Plains, MT
- Average snowfall days in January:
17.8 days - Average snowfall days in February:
17.9 days - Average snowfall days in March:
13.8 days - Average snowfall days in April:
5.9 days - Average snowfall days in May:
0.4 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:
0.3 days - Average snowfall days in October:
2 days - Average snowfall days in November:
11.7 days - Average snowfall days in December:
20.4 days
The month with the highest number of snowfall days is December (20.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Plains, MT
- Average daylight in January:
9h and 0min - 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 3min - 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:
3h and 3min - Average sunshine in February:
4h and 3min - Average sunshine in March:
5h and 4min - Average sunshine in April:
7h and 5min - Average sunshine in May:
9h and 5min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
11h and 5min - Average sunshine in August:
11h and 4min - Average sunshine in September:
9h and 0min - Average sunshine in October:
6h and 4min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Plains, MT
- Average sunshine days in January:
8.8 days - Average sunshine days in February:
6 days - Average sunshine days in March:
5.8 days - Average sunshine days in April:
7.9 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
15.8 days
- Average sunshine days in July:
23.3 days - Average sunshine days in August:
23.3 days - Average sunshine days in September:
20.3 days - Average sunshine days in October:
15.2 days - Average sunshine days in November:
8.7 days - Average sunshine days in December:
8.1 days
The months with the most sunshine days are July and August (23.3 days).
The month with the least sunshine days is March (5.8 days).
Average UV index
Plains, 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
Plains, MT
The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility
Plains, MT
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).
Plains, Montana, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location