Climate and monthly weather forecastHeron, MT
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Heron, Montana, with an average temperature ranging between min 19.6°F (-6.9°C) and max 30.7°F (-0.7°C). The arrival of January is marked by an average high-temperature of a still freezing cold 30.7°F (-0.7°C), bearing a close resemblance to December. Weather in January »Weather in February
The last month of the winter, February, is an icy month in Heron, Montana, with an average temperature ranging between max 32°F (0°C) and min 19.8°F (-6.8°C). February begins with an average high-temperature of an icy 32°F (0°C), reflecting close similarity to the preceding month. Weather in February »Weather in March
March, the first month of the spring in Heron, is still a cold month, with an average temperature ranging between min 24.8°F (-4°C) and max 39.2°F (4°C). In Heron, stepping into March brings a gentle temperature nudge, moving slightly up from February's cold 32°F (0°C) to a still icy 39.2°F (4°C). Weather in March »Weather in April
April in Heron, Montana, is a frosty spring month, with an average temperature varying between 48.7°F (9.3°C) and 30.6°F (-0.8°C). An escalation in the average high-temperature is seen with the onset of April, moving from an icy 39.2°F (4°C) in March to a chilly 48.7°F (9.3°C). Weather in April »Weather in May
May, the last month of the spring in Heron, is a refreshing month, with an average temperature ranging between min 37.9°F (3.3°C) and max 61.3°F (16.3°C). May's onset brings a rise in the average high-temperature, moving from a frosty 48.7°F (9.3°C) in April to a refreshing 61.3°F (16.3°C). Weather in May »Weather in June
June, the first month of the summer in Heron, is still a comfortable month, with an average temperature ranging between max 66.7°F (19.3°C) and min 43°F (6.1°C). The shift into June is accompanied by a modest temperature increase, with the average high-temperature edging up from a refreshing 61.3°F (16.3°C) in May to a still comfortable 66.7°F (19.3°C). Weather in June »Weather in July
July in Heron, Montana, is a warm summer month, with an average temperature varying between 48.7°F (9.3°C) and 77.7°F (25.4°C). July's onset witnesses a shift in the average high-temperature, moving from an enjoyable 66.7°F (19.3°C) in June to a warm 77.7°F (25.4°C). Weather in July »Weather in August
August, the last month of the summer in Heron, is also a moderately hot month, with temperature in the range of an average low of 49.1°F (9.5°C) and an average high of 78.3°F (25.7°C). August, recognised by an average high temperature of 78.3°F (25.7°C) and a low of 49.1°F (9.5°C), is Heron's warmest month. Weather in August »Weather in September
September, the first month of the autumn in Heron, is still a refreshing month, with an average temperature varying between 41.7°F (5.4°C) and 67.8°F (19.9°C). Heron observes a minor decrease in the average high-temperature with the arrival of September, falling from August's warm 78.3°F (25.7°C) to a comfortable 67.8°F (19.9°C). Weather in September »Weather in October
October, the same as September, is a cool autumn month in Heron, Montana, with temperature in the range of an average high of 51.1°F (10.6°C) and an average low of 33.3°F (0.7°C). In October, the average high-temperature decreases considerably from an enjoyable 67.8°F (19.9°C) in September to a cool 51.1°F (10.6°C). Weather in October »Weather in November
The last month of the autumn, November, is another cold month in Heron, Montana, with an average temperature fluctuating between 26.4°F (-3.1°C) and 37.8°F (3.2°C). In the transition to November, Heron observes a drop in the average high-temperature, moving from a cool 51.1°F (10.6°C) in October to a wintry 37.8°F (3.2°C). Weather in November »Weather in December
The first month of the winter, December, is also a subzero cold month in Heron, Montana, with an average temperature varying between 18.7°F (-7.4°C) and 29.3°F (-1.5°C). December proves to be the coldest month, recording an average maximum temperature of 29.3°F (-1.5°C) and a minimum temperature of 18.7°F (-7.4°C). Weather in December »Updated: Aug 4, 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 94%, January is the most humid month.
In Heron, during the entire year, the rain falls for 161.9 days and collects up to 27.48" (698mm) of precipitation.
Months with snowfall are January through May, September through December.
The month with the most snowfall is January, when snow falls for 15.9 days and typically aggregates up to 15.87" (403mm) of snow.
In Heron, during the entire year, snow falls for 80.8 days and aggregates up to 60" (1524mm) of snow.
With an average of 3.2h of sunshine, January has the least sunshine of the year.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.
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.
June through August are months without snowfall.
The month with the longest days is June, with an average of 16h and 0min of daylight.
The month with the highest UV index is July, with an average maximum UV index of 6.
Heron experiences its average highest temperatures in August, reaching a peak of 78.3°F (25.7°C) and a minimum of 49.1°F (9.5°C).
August is the least humid month, with an average relative humidity of 52%.
The month with the least rainfall is August, when the rain falls for 6.9 days and typically collects 0.55" (14mm) of precipitation.
The month with the most sunshine is August, with an average of 11.8h of sunshine.
Heron's coldest month, December, registers temperatures that range from a high of 29.3°F (-1.5°C) to a low of 18.7°F (-7.4°C).
The month with the most rainfall is December, when the rain falls for 11.2 days and typically aggregates up to 3.66" (93mm) of precipitation.
The month with the shortest days is December, with an average of 8h and 24min of daylight.
Average temperature
Heron, MT
The warmest month (with the highest average high temperature) is August (78.3°F).
The month with the lowest average high temperature is December (29.3°F).
The month with the highest average low temperature is August (49.1°F).
The coldest month (with the lowest average low temperature) is December (18.7°F).
Average pressure
Heron, MT
- Average pressure in January:
30.19"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:
29.95"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.93"Hg - Average pressure in August:
29.92"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.18"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.92"Hg).
Average wind speed
Heron, MT
- Average wind speed in January:
3.6mph - Average wind speed in February:
3.8mph - Average wind speed in March:
4.2mph - Average wind speed in April:
4.5mph - Average wind speed in May:
4.3mph - Average wind speed in June:
4.3mph
- Average wind speed in July:
4.2mph - Average wind speed in August:
3.9mph - Average wind speed in September:
3.9mph - Average wind speed in October:
3.8mph - Average wind speed in November:
3.8mph - Average wind speed in December:
3.5mph
The windiest month (with the highest average wind speed) is April (4.5mph).
The calmest month (with the lowest average wind speed) is December (3.5mph).
Average humidity
Heron, MT
The month with the highest relative humidity is January (94%).
The month with the lowest relative humidity is August (52%).
Average rainfall
Heron, MT
- Average rainfall in January:
3.54" - Average rainfall in February:
2.36" - Average rainfall in March:
3.11" - Average rainfall in April:
2.52" - Average rainfall in May:
2.4" - Average rainfall in June:
2.13"
- Average rainfall in July:
0.67" - Average rainfall in August:
0.55" - Average rainfall in September:
1.14" - Average rainfall in October:
2.48" - Average rainfall in November:
2.91" - Average rainfall in December:
3.66"
The wettest month (with the highest rainfall) is December (3.66").
The driest month (with the least rainfall) is August (0.55").
Average rainfall days
Heron, MT
- Average rainfall days in January:
12.3 days - Average rainfall days in February:
11.2 days - Average rainfall days in March:
18.9 days - Average rainfall days in April:
19.3 days - Average rainfall days in May:
17.2 days - Average rainfall days in June:
15.3 days
- Average rainfall days in July:
7.8 days - Average rainfall days in August:
6.9 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
15.6 days - Average rainfall days in November:
15.5 days - Average rainfall days in December:
11.2 days
The month with the highest number of rainy days is April (19.3 days).
The month with the least rainy days is August (6.9 days).
Average snowfall
Heron, MT
- Average snowfall in January:
15.87" - Average snowfall in February:
12.2" - Average snowfall in March:
8.03" - Average snowfall in April:
1.97" - Average snowfall in May:
0.04" - Average snowfall in June:
0"
The month with the highest snowfall is January (15.87").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Heron, MT
- Average snowfall days in January:
15.9 days - Average snowfall days in February:
16.3 days - Average snowfall days in March:
11.6 days - Average snowfall days in April:
5.2 days - Average snowfall days in May:
0.3 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:
1.6 days - Average snowfall days in November:
10.1 days - Average snowfall days in December:
19.5 days
The month with the highest number of snowfall days is December (19.5 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Heron, MT
- Average daylight in January:
8h and 54min - 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 12min - Average daylight in June:
16h and 0min
- Average daylight in July:
15h and 36min - Average daylight in August:
14h and 12min - Average daylight in September:
12h and 36min - Average daylight in October:
10h and 48min - Average daylight in November:
9h and 18min - Average daylight in December:
8h and 24min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in January:
3h and 12min - Average sunshine in February:
3h and 36min - Average sunshine in March:
4h and 48min - Average sunshine in April:
8h and 6min - Average sunshine in May:
9h and 48min - Average sunshine in June:
9h and 42min
- Average sunshine in July:
11h and 30min - Average sunshine in August:
11h and 48min - Average sunshine in September:
9h and 30min - Average sunshine in October:
5h and 54min - Average sunshine in November:
4h and 6min - Average sunshine in December:
3h and 18min
The month with the most sunshine is August (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 12min).
Average sunshine days
Heron, MT
- Average sunshine days in January:
10.2 days - Average sunshine days in February:
7.3 days - Average sunshine days in March:
7.1 days - Average sunshine days in April:
7.6 days - Average sunshine days in May:
11.8 days - Average sunshine days in June:
12.2 days
- Average sunshine days in July:
20.9 days - Average sunshine days in August:
20.8 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
14.3 days - Average sunshine days in November:
9.2 days - Average sunshine days in December:
8.4 days
The month with the most sunshine days is July (20.9 days).
The month with the least sunshine days is March (7.1 days).
Average UV index
Heron, 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
Heron, MT
The month with the most cloud cover is January (Cloud cover 67).
The month with the least cloud cover is August (Cloud cover 14).
Average visibility
Heron, MT
The months with the highest visibility are May, June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).
