Climate and monthly weather forecastIsmay, MT
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Ismay, Montana, with an average temperature ranging between max 26.1°F (-3.3°C) and min 13.3°F (-10.4°C). January, with its high-temperature average of 26.1°F (-3.3°C) and a low-temperature average of 13.3°F (-10.4°C), is the coldest month. Weather in January »Weather in February
February, the last month of the winter in Ismay, is also a subzero cold month, with an average temperature fluctuating between 26.8°F (-2.9°C) and 13.5°F (-10.3°C). The advent of February sees the average high-temperature at a still subzero cold 26.8°F (-2.9°C), subtly shifted from January's 26.1°F (-3.3°C). Weather in February »Weather in March
The first month of the spring, March, is a wintry month in Ismay, Montana, with an average temperature ranging between min 26.4°F (-3.1°C) and max 41.7°F (5.4°C). The average high-temperature exhibits a considerable increase in March, surging from a subzero cold 26.8°F (-2.9°C) in February to a wintry 41.7°F (5.4°C). Weather in March »Weather in April
April in Ismay, Montana, is a fresh spring month, with an average temperature fluctuating between 34.9°F (1.6°C) and 51.8°F (11°C). The start of April signals an increase in the average high-temperature, moving from a wintry 41.7°F (5.4°C) in March to a fresh 51.8°F (11°C). Weather in April »Weather in May
May, the last month of the spring in Ismay, is a refreshing month, with temperature in the range of an average low of 45.3°F (7.4°C) and an average high of 63.5°F (17.5°C). May's arrival coincides with a temperature rise, moving from April's cool 51.8°F (11°C) to an enjoyable 63.5°F (17.5°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Ismay, Montana, with temperature in the range of an average high of 75.2°F (24°C) and an average low of 55.4°F (13°C). The shift into June is characterized by a rise in the average high-temperature, transitioning from May's refreshing 63.5°F (17.5°C) to a moderately hot 75.2°F (24°C). Weather in June »Weather in July
July, like June, in Ismay, Montana, is a moderately hot summer month, with an average temperature fluctuating between 63.3°F (17.4°C) and 84°F (28.9°C). July is the month when Ismay's temperatures reach their peak, with averages of 84°F (28.9°C) and lows of 63.3°F (17.4°C). During July, the heat index is evaluated at 84.2°F (29°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Ismay, Montana, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 81.9°F (27.7°C). Ismay notes an average high-temperature of a still warm 81.9°F (27.7°C) in August, displaying minor variation from July. Weather in August »Weather in September
September, the first month of the autumn in Ismay, is also an agreeable month, with an average temperature ranging between min 54.1°F (12.3°C) and max 72.1°F (22.3°C). September's arrival corresponds with a decrease in average high-temperatures, from August's warm 81.9°F (27.7°C) to a pleasant 72.1°F (22.3°C). Weather in September »Weather in October
October, the same as September, is another fresh autumn month in Ismay, Montana, with an average temperature ranging between max 54.3°F (12.4°C) and min 39.4°F (4.1°C). As September transitions into October, a clear downswing in temperatures is observed, with average highs retreating from a pleasant 72.1°F (22.3°C) to a cool 54.3°F (12.4°C). Weather in October »Weather in November
The last month of the autumn, November, is also an icy month in Ismay, Montana, with temperature in the range of an average low of 26.8°F (-2.9°C) and an average high of 40.1°F (4.5°C). The onset of November brings a small change in high-temperatures, falling from a fresh 54.3°F (12.4°C) in October to a cold 40.1°F (4.5°C). Weather in November »Weather in December
December, the first month of the winter in Ismay, is still a freezing cold month, with an average temperature varying between 26.6°F (-3°C) and 14.9°F (-9.5°C). Ismay's weather in December involves a decrease in the average high-temperature, moving down from November's cold 40.1°F (4.5°C) to a freezing cold 26.6°F (-3°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
In Ismay, the average lowest temperatures are observed in January, with a high of 26.1°F (-3.3°C) and a low of 13.3°F (-10.4°C).
The most humid month in Ismay is January, with an average relative humidity of 85%.
The months with the least rainfall in Ismay, Montana, are January and December Rain falls for 3.1 days and accumulates 0.55" (14mm) of rain.
In Ismay, Montana, during the entire year, the rain falls for 109 days and collects up to 15.12" (384mm) of precipitation.
Months with snowfall in Ismay are January through May, September through December.
Throughout the year, there are 62.4 snowfall days, and 21.97" (558mm) of snow is accumulated.
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Ismay, Montana.
February is the month with the most snowfall. Snow falls for 12 days and accumulates 3.86" (98mm) of snow.
The months with the least sunshine are February and December, with an average of 4.8h of sunshine.
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 15.7 days and accumulates 2.6" (66mm) of precipitation.
In Ismay, snow does not fall in June through August.
The month with the longest days in Ismay, Montana, is June, with an average of 15h and 48min of daylight.
The warmest month is July, with an average high-temperature of 84°F (28.9°C) and an average low-temperature of 63.3°F (17.4°C).
The months with the most sunshine are July and August, with an average of 11.6h of sunshine.
With an average maximum UV index of 7, July is the month with the highest UV index.
With an average relative humidity of 46%, August is the least humid month in Ismay.
With an average of 8h and 42min of daylight, December has the shortest days of the year.
Average temperature
Ismay, MT
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (26.1°F).
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure
Ismay, MT
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.15"Hg - Average pressure in March:
30.03"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.84"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:
29.98"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.14"Hg
The months with the highest atmospheric pressure are January and February (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed
Ismay, MT
- Average wind speed in January:
11.8mph - Average wind speed in February:
10.5mph - Average wind speed in March:
11.1mph - Average wind speed in April:
11.9mph - Average wind speed in May:
11.1mph - Average wind speed in June:
11.1mph
- Average wind speed in July:
10.1mph - Average wind speed in August:
10.1mph - Average wind speed in September:
10.9mph - Average wind speed in October:
11.9mph - Average wind speed in November:
11.3mph - Average wind speed in December:
11.4mph
The windiest months (with the highest average wind speed) are April and October (11.9mph).
The calmest months (with the lowest average wind speed) are July and August (10.1mph).
Average humidity
Ismay, MT
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is August (46%).
Average rainfall
Ismay, MT
- Average rainfall in January:
0.55" - Average rainfall in February:
0.63" - Average rainfall in March:
0.79" - Average rainfall in April:
1.46" - Average rainfall in May:
2.6" - Average rainfall in June:
1.81"
- Average rainfall in July:
2.24" - Average rainfall in August:
1.38" - Average rainfall in September:
1.5" - Average rainfall in October:
0.98" - Average rainfall in November:
0.63" - Average rainfall in December:
0.55"
The wettest month (with the highest rainfall) is May (2.6").
The driest months (with the least rainfall) are January and December (0.55").
Average rainfall days
Ismay, MT
- Average rainfall days in January:
3.1 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
7.8 days - Average rainfall days in April:
12.4 days - Average rainfall days in May:
15.7 days - Average rainfall days in June:
15.2 days
- Average rainfall days in July:
13 days - Average rainfall days in August:
13.5 days - Average rainfall days in September:
9.5 days - Average rainfall days in October:
7.5 days - Average rainfall days in November:
3.7 days - Average rainfall days in December:
3.5 days
The month with the highest number of rainy days is May (15.7 days).
The month with the least rainy days is January (3.1 days).
Average snowfall
Ismay, MT
- Average snowfall in January:
2.95" - Average snowfall in February:
3.86" - Average snowfall in March:
2.95" - Average snowfall in April:
2.44" - Average snowfall in May:
1.38" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.86").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Ismay, MT
- Average snowfall days in January:
11.7 days - Average snowfall days in February:
12 days - Average snowfall days in March:
8.8 days - Average snowfall days in April:
6 days - Average snowfall days in May:
1.7 days - Average snowfall days in June:
0.2 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:
3.5 days - Average snowfall days in November:
7 days - Average snowfall days in December:
11.3 days
The month with the highest number of snowfall days is February (12 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Ismay, MT
- Average daylight in January:
9h and 6min - 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:
15h and 0min - Average daylight in June:
15h and 48min
- Average daylight in July:
15h and 24min - 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 24min - Average daylight in December:
8h and 42min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 42min).
- Average sunshine in January:
4h and 54min - Average sunshine in February:
4h and 48min - Average sunshine in March:
6h and 42min - Average sunshine in April:
8h and 36min - Average sunshine in May:
9h and 42min - Average sunshine in June:
11h and 6min
- Average sunshine in July:
11h and 36min - Average sunshine in August:
11h and 36min - Average sunshine in September:
10h and 12min - Average sunshine in October:
6h and 24min - Average sunshine in November:
5h and 48min - Average sunshine in December:
4h and 48min
The months with the most sunshine are July and August (Average sunshine: 11h and 36min).
The months with the least sunshine are February and December (Average sunshine: 4h and 48min).
Average sunshine days
Ismay, MT
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
16.1 days - Average sunshine days in April:
12 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
11.9 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
14 days - Average sunshine days in September:
17.8 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
19.7 days - Average sunshine days in December:
17.7 days
The month with the most sunshine days is November (19.7 days).
The month with the least sunshine days is June (11.9 days).
Average UV index
Ismay, MT
The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Ismay, MT
The month with the most cloud cover is February (Cloud cover 51).
The months with the least cloud cover are July and August (Cloud cover 18).
Average visibility
Ismay, 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).
