Climate and monthly weather forecastCircle, MT
Climate and monthly weather forecast
Weather in January
January, the same as December, in Circle, Montana, is a freezing cold winter month, with temperature in the range of an average low of 12.6°F (-10.8°C) and an average high of 25.5°F (-3.6°C). January, recording an average high temperature of 25.5°F (-3.6°C) and a low temperature of 12.6°F (-10.8°C), is Circle's coldest month. Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Circle, Montana, with an average temperature varying between 12.7°F (-10.7°C) and 26.2°F (-3.2°C). The commencement of February brings an average high-temperature of a still subzero cold 26.2°F (-3.2°C), marking an inconsequential divergence from January. Weather in February »Weather in March
March, the first month of the spring in Circle, is a wintry month, with temperature in the range of an average high of 41.9°F (5.5°C) and an average low of 27°F (-2.8°C). As Circle, Montana, steps into March, a marked temperature rise is observed, with the average high-temperature advancing from February's subzero cold 26.2°F (-3.2°C) to a cold 41.9°F (5.5°C). Weather in March »Weather in April
April is a cool spring month in Circle, Montana, with an average temperature ranging between max 53.4°F (11.9°C) and min 36.7°F (2.6°C). Circle's April weather shows an increase in high-temperatures, moving from March's wintry 41.9°F (5.5°C) to a fresh 53.4°F (11.9°C). Weather in April »Weather in May
The last month of the spring, May, is an enjoyable month in Circle, Montana, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 46.9°F (8.3°C). May shows a rise in the average high-temperature, moving from April's cool 53.4°F (11.9°C) to a comfortable 64.9°F (18.3°C). Weather in May »Weather in June
June, the first month of the summer in Circle, is a moderately hot month, with temperature in the range of an average high of 76.3°F (24.6°C) and an average low of 56.7°F (13.7°C). The start of June brings a rise in the average high-temperature, moving from a refreshing 64.9°F (18.3°C) in May to a moderately hot 76.3°F (24.6°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Circle, Montana, with an average temperature fluctuating between 84.7°F (29.3°C) and 64°F (17.8°C). Circle's July weather, with an average high temperature of 84.7°F (29.3°C) and an average low temperature of 64°F (17.8°C), tends to be the warmest of the year. In July, the heat index is computed to be 84.2°F (29°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Circle, Montana, with an average temperature varying between 63.1°F (17.3°C) and 83.3°F (28.5°C). August's climate shows a minor adjustment in average high-temperatures to a still moderately hot 83.3°F (28.5°C) from July's 84.7°F (29.3°C). Weather in August »Weather in September
September, the first month of the autumn in Circle, is still a pleasant month, with temperature in the range of an average low of 54.5°F (12.5°C) and an average high of 73°F (22.8°C). The decrease of average high-temperatures is mild in September, with a decline from a warm 83.3°F (28.5°C) in August to an agreeable 73°F (22.8°C). Weather in September »Weather in October
October, like September, in Circle, Montana, is another fresh autumn month, with an average temperature fluctuating between 54.7°F (12.6°C) and 40.1°F (4.5°C). In Circle, stepping into October signifies a significant temperature decrement, moving down from September's pleasant 73°F (22.8°C) to a cool 54.7°F (12.6°C). Weather in October »Weather in November
The last month of the autumn, November, is another cold month in Circle, Montana, with temperature in the range of an average high of 40.5°F (4.7°C) and an average low of 27°F (-2.8°C). Circle, Montana, in November undergoes a mild reduction in the average high-temperature, shifting from October's fresh 54.7°F (12.6°C) to an icy 40.5°F (4.7°C). Weather in November »Weather in December
December, the first month of the winter in Circle, is also a subzero cold month, with an average temperature ranging between max 26.2°F (-3.2°C) and min 14.2°F (-9.9°C). The onset of December introduces a moderate change in Circle's weather, with average high-temperatures falling from November's wintry 40.5°F (4.7°C) to a subzero cold 26.2°F (-3.2°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Circle, MT
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (25.5°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).
Average pressure
Circle, MT
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.83"Hg
- Average pressure in July:
29.88"Hg - Average pressure in August:
29.88"Hg - Average pressure in September:
29.92"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).
Average wind speed
Circle, MT
- Average wind speed in January:
10.4mph - Average wind speed in February:
9.4mph - Average wind speed in March:
10.2mph - Average wind speed in April:
11.2mph - Average wind speed in May:
10.5mph - Average wind speed in June:
10.4mph
- Average wind speed in July:
9.6mph - Average wind speed in August:
9.3mph - Average wind speed in September:
10.3mph - Average wind speed in October:
11.1mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.2mph
The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is August (9.3mph).
Average humidity
Circle, MT
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (43%).
Average rainfall
Circle, MT
- Average rainfall in January:
0.51" - Average rainfall in February:
0.59" - Average rainfall in March:
0.59" - Average rainfall in April:
1.3" - Average rainfall in May:
2.2" - Average rainfall in June:
1.81"
- Average rainfall in July:
1.46" - Average rainfall in August:
1.22" - Average rainfall in September:
1.73" - Average rainfall in October:
0.79" - Average rainfall in November:
0.55" - Average rainfall in December:
0.59"
The wettest month (with the highest rainfall) is May (2.2").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days
Circle, MT
- Average rainfall days in January:
4.4 days - Average rainfall days in February:
4 days - Average rainfall days in March:
8 days - Average rainfall days in April:
11.7 days - Average rainfall days in May:
13.7 days - Average rainfall days in June:
13.3 days
- Average rainfall days in July:
11.1 days - Average rainfall days in August:
10.6 days - Average rainfall days in September:
8.3 days - Average rainfall days in October:
8.2 days - Average rainfall days in November:
5.2 days - Average rainfall days in December:
4.1 days
The month with the highest number of rainy days is May (13.7 days).
The month with the least rainy days is February (4 days).
Average snowfall
Circle, MT
- Average snowfall in January:
2.87" - Average snowfall in February:
3.62" - Average snowfall in March:
2.01" - Average snowfall in April:
2.01" - Average snowfall in May:
0.79" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Circle, MT
- Average snowfall days in January:
12.9 days - Average snowfall days in February:
12 days - Average snowfall days in March:
7.3 days - Average snowfall days in April:
4.3 days - Average snowfall days in May:
1 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 days - Average snowfall days in October:
2.4 days - Average snowfall days in November:
7.2 days - Average snowfall days in December:
11.5 days
The month with the highest number of snowfall days is January (12.9 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight / Average sunshine
Circle, MT
- Average daylight in January:
9h and 0min - Average daylight in February:
10h and 18min - Average daylight in March:
11h and 54min - Average daylight in April:
13h and 42min - Average daylight in May:
15h and 6min - Average daylight in June:
15h and 54min
- Average daylight in July:
15h and 30min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 18min - Average daylight in December:
8h and 30min
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:
5h and 6min - Average sunshine in February:
4h and 54min - Average sunshine in March:
6h and 48min - Average sunshine in April:
9h and 0min - Average sunshine in May:
10h and 0min - Average sunshine in June:
11h and 6min
- Average sunshine in July:
11h and 42min - Average sunshine in August:
11h and 36min - Average sunshine in September:
10h and 12min - Average sunshine in October:
6h and 18min - Average sunshine in November:
5h and 48min - Average sunshine in December:
4h and 54min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The months with the least sunshine are February and December (Average sunshine: 4h and 54min).
Average sunshine days
Circle, MT
- Average sunshine days in January:
16.4 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
15.3 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
14.6 days - Average sunshine days in June:
13.1 days
- Average sunshine days in July:
16.7 days - Average sunshine days in August:
17.6 days - Average sunshine days in September:
19.8 days - Average sunshine days in October:
19.2 days - Average sunshine days in November:
19.2 days - Average sunshine days in December:
17.5 days
The month with the most sunshine days is September (19.8 days).
The month with the least sunshine days is June (13.1 days).
Average UV index
Circle, MT
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover
Circle, MT
The month with the most cloud cover is February (Cloud cover 49).
The months with the least cloud cover are July and August (Cloud cover 17).
Average visibility
Circle, 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).





