Climate and monthly weather forecastMullan, ID
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Mullan, Idaho, with an average temperature fluctuating between 30°F (-1.1°C) and 18.5°F (-7.5°C). Mullan's average high-temperature marks a still freezing cold 30°F (-1.1°C) with the advent of January, closely mirroring that of the preceding month. Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Mullan, Idaho, with temperature in the range of an average high of 30.6°F (-0.8°C) and an average low of 18.5°F (-7.5°C). As February unfolds, the average high-temperature reaches a still subzero cold 30.6°F (-0.8°C), hinting at a slight fluctuation from the previous month. Weather in February »Weather in March
The first month of the spring, March, is a cold month in Mullan, Idaho, with an average temperature varying between 23.7°F (-4.6°C) and 37.2°F (2.9°C). March signifies a subtle uplift in the average high-temperature, adjusting from a subzero cold 30.6°F (-0.8°C) in February to a wintry 37.2°F (2.9°C). Weather in March »Weather in April
April is a frosty spring month in Mullan, Idaho, with an average temperature ranging between max 46°F (7.8°C) and min 28.2°F (-2.1°C). Mullan's weather in April presents a minor rise in the average high-temperature, moving from an icy 37.2°F (2.9°C) in March to a frosty 46°F (7.8°C). Weather in April »Weather in May
May, the last month of the spring in Mullan, is a moderate month, with an average temperature fluctuating between 35.2°F (1.8°C) and 58.6°F (14.8°C). In Mullan, the average high-temperature in May rises, from a frosty 46°F (7.8°C) in April, to a mild 58.6°F (14.8°C). Weather in May »Weather in June
June, the first month of the summer in Mullan, is a comfortable month, with temperature in the range of an average low of 41.2°F (5.1°C) and an average high of 65.1°F (18.4°C). A subtle rise in the average high-temperature is observed during June, adjusting from a refreshing 58.6°F (14.8°C) in May to an enjoyable 65.1°F (18.4°C). Weather in June »Weather in July
July in Mullan, Idaho, is a moderately hot summer month, with temperature in the range of an average high of 76.8°F (24.9°C) and an average low of 46.2°F (7.9°C). As July sets, the average high-temperature shows an increase, moving up from a refreshing 65.1°F (18.4°C) in June to a warm 76.8°F (24.9°C). Weather in July »Weather in August
August, the last month of the summer in Mullan, is another warm month, with an average temperature varying between 47.3°F (8.5°C) and 77°F (25°C). In Mullan, the month of August is known for its highest average temperatures, reaching a high of 77°F (25°C) and a low of 47.3°F (8.5°C). Weather in August »Weather in September
September, the first month of the autumn in Mullan, is still a refreshing month, with an average temperature fluctuating between 40.1°F (4.5°C) and 66.2°F (19°C). September's arrival comes with a decrease in the average high-temperature, moving from a moderately hot 77°F (25°C) in August to an enjoyable 66.2°F (19°C). Weather in September »Weather in October
October, like September, is a frosty autumn month in Mullan, Idaho, with an average temperature fluctuating between 49.5°F (9.7°C) and 31.1°F (-0.5°C). October's arrival sees a clear drop in the average high-temperature, decreasing from September's enjoyable 66.2°F (19°C) to a frosty 49.5°F (9.7°C). Weather in October »Weather in November
November, the last month of the autumn in Mullan, is another cold month, with an average temperature fluctuating between 36.3°F (2.4°C) and 24.4°F (-4.2°C). As November commences, the average high-temperature shows a reduction, transitioning from a frosty 49.5°F (9.7°C) in October to a wintry 36.3°F (2.4°C). Weather in November »Weather in December
The first month of the winter, December, is also a subzero cold month in Mullan, Idaho, with an average temperature ranging between min 16.9°F (-8.4°C) and max 27.9°F (-2.3°C). In Mullan, the lowest average temperatures are observed in December, with a high of 27.9°F (-2.3°C) and a low of 16.9°F (-8.4°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Mullan, ID
The warmest month (with the highest average high temperature) is August (77°F).
The month with the lowest average high temperature is December (27.9°F).
The month with the highest average low temperature is August (47.3°F).
The coldest month (with the lowest average low temperature) is December (16.9°F).
Average pressure
Mullan, ID
- 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:
29.94"Hg - Average pressure in August:
29.93"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:
30.18"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The months with the lowest atmospheric pressure are June and August (29.93"Hg).
Average wind speed
Mullan, ID
- Average wind speed in January:
4.4mph - Average wind speed in February:
4.5mph - Average wind speed in March:
4.6mph - Average wind speed in April:
4.9mph - Average wind speed in May:
4.5mph - Average wind speed in June:
4.6mph
- Average wind speed in July:
4.5mph - Average wind speed in August:
4.1mph - Average wind speed in September:
4.1mph - Average wind speed in October:
4.3mph - Average wind speed in November:
4.4mph - Average wind speed in December:
4.2mph
The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest months (with the lowest average wind speed) are August and September (4.1mph).
Average humidity
Mullan, ID
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (54%).
Average rainfall
Mullan, ID
- Average rainfall in January:
3.58" - Average rainfall in February:
2.83" - Average rainfall in March:
2.91" - Average rainfall in April:
2.28" - Average rainfall in May:
2.09" - Average rainfall in June:
1.65"
- Average rainfall in July:
0.39" - Average rainfall in August:
0.47" - Average rainfall in September:
0.75" - Average rainfall in October:
2.36" - Average rainfall in November:
2.48" - Average rainfall in December:
3.31"
The wettest month (with the highest rainfall) is January (3.58").
The driest month (with the least rainfall) is July (0.39").
Average rainfall days
Mullan, ID
- Average rainfall days in January:
2.8 days - Average rainfall days in February:
2.8 days - Average rainfall days in March:
6.9 days - Average rainfall days in April:
10.2 days - Average rainfall days in May:
13.3 days - Average rainfall days in June:
12.9 days
- Average rainfall days in July:
6.4 days - Average rainfall days in August:
6.2 days - Average rainfall days in September:
8.5 days - Average rainfall days in October:
9.2 days - Average rainfall days in November:
6 days - Average rainfall days in December:
3.3 days
The month with the highest number of rainy days is May (13.3 days).
The months with the least rainy days are January and February (2.8 days).
Average snowfall
Mullan, ID
- Average snowfall in January:
29.53" - Average snowfall in February:
23.82" - Average snowfall in March:
21.65" - Average snowfall in April:
12.83" - Average snowfall in May:
3.78" - Average snowfall in June:
1.34"
The month with the highest snowfall is January (29.53").
The months with the least snowfall are July and August (0").
Average snowfall days
Mullan, ID
- Average snowfall days in January:
20.6 days - Average snowfall days in February:
20.9 days - Average snowfall days in March:
22.1 days - Average snowfall days in April:
13.8 days - Average snowfall days in May:
5.4 days - Average snowfall days in June:
1.7 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
1 days - Average snowfall days in October:
9 days - Average snowfall days in November:
18.2 days - Average snowfall days in December:
20.5 days
The month with the highest number of snowfall days is March (22.1 days).
The months with the least snowfall days are July and August (0 days).
Average daylight / Average sunshine
Mullan, ID
- 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:
3h and 30min - Average sunshine in February:
4h and 24min - Average sunshine in March:
5h and 24min - Average sunshine in April:
7h and 42min - Average sunshine in May:
9h and 36min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
11h and 42min - Average sunshine in August:
11h and 30min - Average sunshine in September:
8h and 54min - Average sunshine in October:
6h and 24min - Average sunshine in November:
4h and 42min - Average sunshine in December:
3h and 36min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Mullan, ID
- Average sunshine days in January:
11 days - Average sunshine days in February:
7.8 days - Average sunshine days in March:
7.5 days - Average sunshine days in April:
10.7 days - Average sunshine days in May:
13.4 days - Average sunshine days in June:
15.3 days
- Average sunshine days in July:
23 days - Average sunshine days in August:
23.2 days - Average sunshine days in September:
19.7 days - Average sunshine days in October:
15.8 days - Average sunshine days in November:
10 days - Average sunshine days in December:
10.8 days
The month with the most sunshine days is August (23.2 days).
The month with the least sunshine days is March (7.5 days).
Average UV index
Mullan, ID
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover
Mullan, ID
The month with the most cloud cover is February (Cloud cover 67).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility
Mullan, ID
The months with the highest visibility are June, July, August and September (6mi).
The month with the lowest visibility is January (2mi).





