Climate and monthly weather forecastJoliet, MT
Climate and monthly weather forecast
Weather in January
January in Joliet, Montana, is a cold winter month, with temperature in the range of an average high of 32°F (0°C) and an average low of 18.7°F (-7.4°C). Joliet records an average high-temperature of an icy 32°F (0°C) in January, closely mirroring the climate of the previous month. Weather in January »Weather in February
February, the last month of the winter in Joliet, is also an icy month, with an average temperature ranging between max 32.4°F (0.2°C) and min 16.7°F (-8.5°C). February's onset sees an average high-temperature of a still wintry 32.4°F (0.2°C), exhibiting a slight fluctuation from the previous month. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Joliet, Montana, with temperature in the range of an average high of 43.5°F (6.4°C) and an average low of 27.5°F (-2.5°C). The beginning of March marks a shift in the average high-temperature, moving from February's cold 32.4°F (0.2°C) to a frosty 43.5°F (6.4°C). Weather in March »Weather in April
April in Joliet, Montana, is a fresh spring month, with an average temperature fluctuating between 51.3°F (10.7°C) and 33.3°F (0.7°C). April signifies a subtle uplift in the average high-temperature, adjusting from a chilly 43.5°F (6.4°C) in March to a cool 51.3°F (10.7°C). Weather in April »Weather in May
May, the last month of the spring in Joliet, is an enjoyable month, with an average temperature varying between 41.4°F (5.2°C) and 61°F (16.1°C). Entering May, Joliet sees a temperature rise, with the average high-temperature advancing from April's fresh 51.3°F (10.7°C) to a comfortable 61°F (16.1°C). Weather in May »Weather in June
June, the first month of the summer in Joliet, is a pleasant month, with an average temperature varying between 49.6°F (9.8°C) and 72.7°F (22.6°C). As Joliet welcomes June, the average high-temperature sees a rise, transitioning from a comfortable 61°F (16.1°C) in May to a pleasant 72.7°F (22.6°C). Weather in June »Weather in July
July in Joliet, Montana, is a warm summer month, with an average temperature fluctuating between 82.9°F (28.3°C) and 57.2°F (14°C). In Joliet, temperatures reach their average annual highs in July, measuring 82.9°F (28.3°C) and a minimum average of 57.2°F (14°C). The heat index value for July is estimated at 82.4°F (28°C). Weather in July »Weather in August
August, the last month of the summer in Joliet, is also a moderately hot month, with an average temperature ranging between min 57.2°F (14°C) and max 81.1°F (27.3°C). Joliet starts August with an average high-temperature of a still warm 81.1°F (27.3°C), hinting at a minimal fluctuation from July. Weather in August »Weather in September
September, the first month of the autumn in Joliet, is still a pleasant month, with an average temperature varying between 50.2°F (10.1°C) and 72°F (22.2°C). The start of September comes with a reduction in the average high-temperature, receding from a moderately hot 81.1°F (27.3°C) in August to a pleasant 72°F (22.2°C). Weather in September »Weather in October
October, the same as September, is another fresh autumn month in Joliet, Montana, with temperature in the range of an average high of 55.2°F (12.9°C) and an average low of 37.9°F (3.3°C). With the onset of October, Joliet's average high-temperature experiences a noticeable drop, receding from September's pleasant 72°F (22.2°C) to a cool 55.2°F (12.9°C). Weather in October »Weather in November
The last month of the autumn, November, is another cold month in Joliet, Montana, with an average temperature varying between 41.9°F (5.5°C) and 26.8°F (-2.9°C). The shift from October to November involves a decrease in the average high-temperature, from a cool 55.2°F (12.9°C) to an icy 41.9°F (5.5°C). Weather in November »Weather in December
December, the first month of the winter in Joliet, is still a freezing cold month, with an average temperature ranging between max 30.7°F (-0.7°C) and min 17.4°F (-8.1°C). Joliet's coldest temperatures are experienced in December, with average high temperatures of 30.7°F (-0.7°C) and lows of 17.4°F (-8.1°C). Weather in December »Updated: Aug 28, 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
With an average relative humidity of 76%, January is the most humid month.
January is the month with the least rainfall in Joliet, Montana. Rain falls for 6 days and accumulates 0.51" (13mm) of precipitation.
Throughout the year, there are 108.1 rainfall days, and 12.83" (326mm) of precipitation is accumulated.
January through June, September through December are months with snowfall.
Throughout the year, there are 61.5 snowfall days, and 41.77" (1061mm) of snow is accumulated.
The months with the lowest UV index in Joliet are January through March, November and December, with an average maximum UV index of 2.
February is the month with the most snowfall. Snow falls for 10.8 days and accumulates 6.81" (173mm) of snow.
With an average of 6.2h of sunshine, February has the least sunshine of the year.
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.
May is the month with the most rainfall. Rain falls for 16.3 days and accumulates 2.09" (53mm) of precipitation.
June has the longest days of the year, with an average of 15h and 36min of daylight.
Joliet's warmest month, July, generally records average temperatures ranging from a high of 82.9°F (28.3°C) to a low of 57.2°F (14°C).
In Joliet, snow does not fall in July and August.
The month with the most sunshine is July, with an average of 11.9h of sunshine.
With an average maximum UV index of 6, July is the month with the highest UV index.
With an average relative humidity of 41%, August is the least humid month.
The coldest period tends to be December, when average temperatures fluctuate between a high of 30.7°F (-0.7°C) and a low of 17.4°F (-8.1°C).
December has the shortest days of the year in Joliet, with an average of 8h and 48min of daylight.
Average temperature
Joliet, MT
The warmest month (with the highest average high temperature) is July (82.9°F).
The month with the lowest average high temperature is December (30.7°F).
The months with the highest average low temperature are July and August (57.2°F).
The coldest month (with the lowest average low temperature) is February (16.7°F).
Average pressure
Joliet, MT
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.01"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.02"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.15"Hg
The months with the highest atmospheric pressure are January and December (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Joliet, MT
- Average wind speed in January:
8.7mph - Average wind speed in February:
7.8mph - Average wind speed in March:
7.7mph - Average wind speed in April:
7.9mph - Average wind speed in May:
7.1mph - Average wind speed in June:
6.6mph
- Average wind speed in July:
6.1mph - Average wind speed in August:
6mph - Average wind speed in September:
6.9mph - Average wind speed in October:
8mph - Average wind speed in November:
8.5mph - Average wind speed in December:
8.5mph
The windiest month (with the highest average wind speed) is January (8.7mph).
The calmest month (with the lowest average wind speed) is August (6mph).
Average humidity
Joliet, MT
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is August (41%).
Average rainfall
Joliet, MT
- Average rainfall in January:
0.51" - Average rainfall in February:
0.87" - Average rainfall in March:
1.1" - Average rainfall in April:
1.73" - Average rainfall in May:
2.09" - Average rainfall in June:
1.61"
- Average rainfall in July:
0.83" - Average rainfall in August:
0.75" - Average rainfall in September:
0.79" - Average rainfall in October:
1.1" - Average rainfall in November:
0.83" - Average rainfall in December:
0.63"
The wettest month (with the highest rainfall) is May (2.09").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days
Joliet, MT
- Average rainfall days in January:
6 days - Average rainfall days in February:
4 days - Average rainfall days in March:
9.3 days - Average rainfall days in April:
13 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
12.1 days
- Average rainfall days in July:
9.4 days - Average rainfall days in August:
10.8 days - Average rainfall days in September:
6.9 days - Average rainfall days in October:
8 days - Average rainfall days in November:
6.1 days - Average rainfall days in December:
6.2 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (4 days).
Average snowfall
Joliet, MT
- Average snowfall in January:
3.58" - Average snowfall in February:
6.81" - Average snowfall in March:
5.91" - Average snowfall in April:
6.18" - Average snowfall in May:
2.83" - Average snowfall in June:
0.12"
The month with the highest snowfall is February (6.81").
The months with the least snowfall are July and August (0").
Average snowfall days
Joliet, MT
- Average snowfall days in January:
9.9 days - Average snowfall days in February:
10.8 days - Average snowfall days in March:
8.5 days - Average snowfall days in April:
6.6 days - Average snowfall days in May:
2.4 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:
0.8 days - Average snowfall days in October:
4.6 days - Average snowfall days in November:
8.2 days - Average snowfall days in December:
9.6 days
The month with the highest number of snowfall days is February (10.8 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Joliet, MT
- Average daylight in January:
9h and 12min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
14h and 54min - Average daylight in June:
15h and 36min
- Average daylight in July:
15h and 18min - Average daylight in August:
14h and 6min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 30min - Average daylight in December:
8h and 48min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in January:
6h and 24min - Average sunshine in February:
6h and 12min - Average sunshine in March:
8h and 24min - Average sunshine in April:
10h and 6min - Average sunshine in May:
10h and 30min - Average sunshine in June:
11h and 36min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
11h and 42min - Average sunshine in September:
10h and 36min - Average sunshine in October:
6h and 54min - Average sunshine in November:
6h and 36min - Average sunshine in December:
6h and 24min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 12min).
Average sunshine days
Joliet, MT
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
15.2 days - Average sunshine days in March:
16.3 days - Average sunshine days in April:
11.4 days - Average sunshine days in May:
10.5 days - Average sunshine days in June:
13.3 days
- Average sunshine days in July:
12.4 days - Average sunshine days in August:
12.3 days - Average sunshine days in September:
18.4 days - Average sunshine days in October:
18.1 days - Average sunshine days in November:
18.7 days - Average sunshine days in December:
19.7 days
The month with the most sunshine days is December (19.7 days).
The month with the least sunshine days is May (10.5 days).
Average UV index
Joliet, MT
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover
Joliet, MT
The month with the most cloud cover is February (Cloud cover 38).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility
Joliet, 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).
