Climate and monthly weather forecastPolson, MT
Climate and monthly weather forecast
The climate of Polson
Polson, Montana, has a predominant climate classified as Dfb under the Köppen Climate Classification system. This translates to a Humid Continental climate with the absence of a dry season and a warm summer. The town sits in a geographical location that is frequently exposed to different weather conditions throughout the year.Weather parameters tend to change on a month-to-month basis. The highest recorded average temperature slightly exceeds 79°F (26.1°C) during July. Simultaneously, the lowest average temperature falls to around 16.7°F (-8.5°C) in December. A diverse range in temperatures can therefore be witnessed in the span of a year because of the continental climate.
Relative humidity in Polson varies over the year but remains on the higher side. January and February see the highest relative humidity - touching 91% and 89% respectively. A dip in humidity starts from April with 75% and hits the lowest in July and August with 52% and 51%.
Rainfall is evenly spread across the year, with slight increases noted in April and June with 2.05" (52mm) and 2.2" (56mm) respectively. The driest months are found to be July and August, both receiving only 0.55" (14mm) over four weeks. Polson experiences snowfall from October to April with the heaviest falling in December and January, registering 10.2" (259mm) and 10.2" (259mm) respectively.
The best time to visit Polson
In terms of pleasant weather and multiple outdoor activities, the best time to visit Polson falls between May and September. Visitors can expect average high temperatures fluctuating between 60.4°F (15.8°C), 68°F (20°C), 79.3°F (26.3°C), 78.6°F (25.9°C), and 67.6°F (19.8°C) respectively and less rainfall than other months. Hours of available daylight are also at a yearly maximum at this time, averaging between 15.2 hours to 15.9 hours.The worst time to visit Polson
Owing to adverse weather conditions, particularly colder temperatures, and higher snowfall, the least preferable time to visit Polson would be from December to February. The average temperature falls between 17.8°F (-7.9°C) and 16.7°F (-8.5°C) and the town experiences significant snowfall upwards of 10.24" (260mm).Spring weather in Polson
In Polson, spring season spans from March to May. During these months, both temperatures and rainfall gradually rise. The average high temperature soars from 38.8°F (3.8°C) to 60.4°F (15.8°C) and the total rainfall increases from 1.89" (48mm) to 1.69" (43mm) over this transition.Summer weather in Polson
June marks the start of summer, lasting until August. These months witness the hottest days with maximum temperatures between 68°F (20°C) and 79.3°F (26.3°C). Rainfall is also relatively sparse during this period making it ideal for outdoor activities. Days are longer with up to 15.9 hours of daylight available in June.Autumn weather in Polson
Autumn in Polson stretches from September to November. Average high temperatures descend considerably from 67.6°F (19.8°C) in September to 37.2°F (2.9°C) by November. Rainfall gradually increases with November receiving 1.57" (40mm) compared to 0.94" (24mm) in September.Winter weather in Polson
Winter in Polson is characterised by cold temperatures and the presence of snow. December, January, and February register average high temperatures between 30.6°F (-0.8°C) and 27.9°F (-2.3°C). The winter season welcomes copious snowfall with December and January averaging over 10" (254mm). February records 10.28" (261mm) of snow.Weather in January
The year begins in Polson, Montana, with brisk temperatures, tending towards cold and damp conditions. Notably, Polson experiences its highest snowfall during this month, with a significant accumulation of 10.24" (260mm). The city is enveloped in a winter wonderland, with the landscape transforming into a pristine white canvas. Weather in January »Weather in February
As we proceed from January to February, the weather in Polson, Montana, experiences little change. The city continues to battle the winter chill, with the thermometer refusing to cross over to the warmer side. The snowfall slightly dips from the high of January to 10.28" (261mm). Weather in February »Weather in March
The seasonal shift to spring in March brings a considerable change in the weather pattern in Polson, Montana. The snowfall takes a significant downturn, reduced to 6.14" (156mm) from February's 10.28" (261mm), signaling the end of the severe winter spell. Weather in March »Weather in April
The month of April in Polson, Montana, sees consistent warming and the advent of more hospitable weather conditions. The last vestiges of winter fade away, and the snowfall trickles down further to 3.27" (83mm), a marked contrast from March. Weather in April »Weather in May
May ushers in a period of pleasant weather in Polson, Montana, offering respite from the cold. It records the least snowfall, as little as 0.2" (5mm), signifying the comprehensive exit of winter. The lengthening days and the sparkling sunshine become wonderful constants, making the city come alive in spring’s brilliance. Weather in May »Weather in June
June in Polson, Montana, is a jubilant expression of summer, where the weather conditions are sunny and warm. Snowfall ceases completely, leaving behind the remnants of winter. On the threshold of the peak summer season, the city enjoys extended periods of daylight and plenty of sunshine. Weather in June »Weather in July
The zenith of summer occurs in July in Polson, Montana, where the city basks in the warmest weather ever. With temperatures peaking at 79.3°F (26.3°C), this month registers the highest temperature for the year. Warm days are complemented by cool summer nights, providing perfect weather for a plethora of outdoor activities. Weather in July »Weather in August
In August, the weather in Polson, Montana, undergoes a slight temperature shift. From the soaring temperatures of July, the heat begins to mellow down. Notably, August records high temperatures similar to July, as the mercury reaches 78.6°F (25.9°C). Weather in August »Weather in September
With the onset of September, Polson, Montana, witnesses a clear transition from summer to fall. The temperatures start to lower, and there is a noticeable nip in the air. After a dry summer spell, the city records 0.94" (24mm) of rain, signaling the beginning of the wetter season of fall. Weather in September »Weather in October
October in Polson, Montana, sees the full bloom of autumn and the return of cooler temperatures. The rainfall increases to 1.54" (39mm), providing the landscape with a fresh, clean appearance. The leaves, which were green just a few weeks ago, transform into shades of orange, red, and brown. Weather in October »Weather in November
As November arrives in Polson, Montana, the weather transitions towards winter. After the rainfall in October, the city receives a significant increase in snowfall, accumulating 5.59" (142mm) in November. The temperature continues to drop, paving the way for the chilly winter season. Weather in November »Weather in December
December in Polson, Montana, hails the onset of the strenuous winter season. After the snowfall in November, the city gets even snowier, recording a high snowfall of 10.2" (259mm). As the year nears its end, the city plunges into a deep chill, with temperatures often close to freezing. Weather in December »Updated: Feb 13, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
With an average relative humidity of 91%, January is the most humid month.
In Polson, Montana, during the entire year, the rain falls for 160.2 days and collects up to 18.11" (460mm) of precipitation.
Months with snowfall in Polson, Montana, are January through May, September through December.
In Polson, Montana, during the entire year, snow falls for 99 days and aggregates up to 47.28" (1201mm) of snow.
January has the least sunshine of the year in Polson, with an average of 4.5h of sunshine.
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.
February is the month with the most snowfall in Polson, Montana. Snow falls for 19.2 days and accumulates 10.28" (261mm) of snow.
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 is the month with the most rainfall in Polson. Rain falls for 15.6 days and accumulates 2.2" (56mm) of precipitation.
June through August are months without snowfall.
The month with the longest days in Polson, Montana, is June, with an average of 15h and 54min of daylight.
June and July, with an average maximum UV index of 5, are months with the highest UV index in Polson, Montana.
Polson's July weather reaches an average high of 79.3°F (26.3°C) and an average low of 48.9°F (9.4°C), making it the warmest month.
The months with the least rainfall are July and August Rain falls for 7.5 days and accumulates 0.55" (14mm) of rain.
July has the most sunshine of the year in Polson, Montana, with an average of 11.9h of sunshine.
With an average relative humidity of 51%, August is the least humid month.
The coldest period in Polson, Montana, is December, when temperatures fluctuate between an average high of 27.9°F (-2.3°C) and a low of 16.7°F (-8.5°C).
With an average of 8h and 30min of daylight, December has the shortest days of the year in Polson, Montana.
Average temperature
Polson, MT
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is December (27.9°F).
The months with the highest average low temperature are July and August (48.9°F).
The coldest month (with the lowest average low temperature) is December (16.7°F).
Average pressure
Polson, MT
- Average pressure in January:
30.17"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:
29.96"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.95"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.05"Hg - Average pressure in November:
30.1"Hg - Average pressure in December:
30.16"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Polson, MT
- Average wind speed in January:
4mph - Average wind speed in February:
4.3mph - Average wind speed in March:
4.5mph - Average wind speed in April:
4.8mph - Average wind speed in May:
4.4mph - Average wind speed in June:
4.4mph
- Average wind speed in July:
4mph - Average wind speed in August:
3.7mph - Average wind speed in September:
3.9mph - Average wind speed in October:
4.2mph - Average wind speed in November:
4.3mph - Average wind speed in December:
4mph
The windiest month (with the highest average wind speed) is April (4.8mph).
The calmest month (with the lowest average wind speed) is August (3.7mph).
Average humidity
Polson, MT
The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is August (51%).
Average rainfall
Polson, MT
- Average rainfall in January:
1.69" - Average rainfall in February:
1.73" - Average rainfall in March:
1.89" - Average rainfall in April:
2.05" - Average rainfall in May:
1.69" - Average rainfall in June:
2.2"
- Average rainfall in July:
0.55" - Average rainfall in August:
0.55" - Average rainfall in September:
0.94" - Average rainfall in October:
1.54" - Average rainfall in November:
1.57" - Average rainfall in December:
1.69"
The wettest month (with the highest rainfall) is June (2.2").
The driest months (with the least rainfall) are July and August (0.55").
Average rainfall days
Polson, MT
- Average rainfall days in January:
12.4 days - Average rainfall days in February:
12.1 days - Average rainfall days in March:
18.8 days - Average rainfall days in April:
18.8 days - Average rainfall days in May:
15.4 days - Average rainfall days in June:
15.6 days
- Average rainfall days in July:
7.5 days - Average rainfall days in August:
7 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
14.5 days - Average rainfall days in November:
14.5 days - Average rainfall days in December:
12.9 days
The months with the highest number of rainy days are March and April (18.8 days).
The month with the least rainy days is August (7 days).
Average snowfall
Polson, MT
- Average snowfall in January:
10.24" - Average snowfall in February:
10.28" - Average snowfall in March:
6.14" - Average snowfall in April:
3.27" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is February (10.28").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Polson, MT
- Average snowfall days in January:
19.7 days - Average snowfall days in February:
19.2 days - Average snowfall days in March:
14.5 days - Average snowfall days in April:
8.3 days - Average snowfall days in May:
0.7 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:
0.2 days - Average snowfall days in October:
3.4 days - Average snowfall days in November:
13.2 days - Average snowfall days in December:
19.8 days
The month with the highest number of snowfall days is December (19.8 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Polson, 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:
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:
4h and 30min - Average sunshine in February:
5h and 24min - Average sunshine in March:
7h and 0min - Average sunshine in April:
8h and 54min - Average sunshine in May:
10h and 30min - Average sunshine in June:
10h and 42min
- Average sunshine in July:
11h and 54min - Average sunshine in August:
11h and 42min - Average sunshine in September:
9h and 24min - Average sunshine in October:
6h and 54min - Average sunshine in November:
5h and 42min - Average sunshine in December:
4h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 54min).
The month with the least sunshine is January (Average sunshine: 4h and 30min).
Average sunshine days
Polson, MT
- Average sunshine days in January:
9.3 days - Average sunshine days in February:
6.5 days - Average sunshine days in March:
6.4 days - Average sunshine days in April:
7.7 days - Average sunshine days in May:
12.1 days - Average sunshine days in June:
12.3 days
- Average sunshine days in July:
21.3 days - Average sunshine days in August:
19.9 days - Average sunshine days in September:
17.5 days - Average sunshine days in October:
13.7 days - Average sunshine days in November:
10.1 days - Average sunshine days in December:
9.5 days
The month with the most sunshine days is July (21.3 days).
The month with the least sunshine days is March (6.4 days).
Average UV index
Polson, MT
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover
Polson, MT
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and August (Cloud cover 14).
Average visibility
Polson, MT
The months with the highest visibility are April, May, June, July, August, September and October (6mi).
The months with the lowest visibility are January, February and December (4mi).
