Climate and monthly weather forecastThompson Falls, MT
Climate and monthly weather forecast
The climate of Thompson Falls
Positioned geographically in the northwestern part of Montana, Thompson Falls experiences a predominately humid continental climate with a dry, warm summer. This type of climate, denoted as Dsb in Köppen climate classification, yields diverse weather patterns throughout the year. Not to mention, Thompson Falls is tucked away within the corners of the Rocky Mountains, resulting in unique atmospheric conditions.The weather parameters in Thompson Falls fluctuate widely during the year. Temperatures peak from July to August when they approach the upper limit at 78.8°F (26°C) while the coldest period waits near the year's end with temperatures dropping as low as 16.2°F (-8.8°C) in December. Relative humidity tends to be the highest in winter with a maximum of 93% in January and the lowest in summer bottoming out at 53% in July and August. Rainfall follows a similar pattern of close to 3" (76mm) in the winter months and falling to around 0.43 to 0.39" (10mm) during the summer.
A weather oddity specific to Thompson Falls includes the substantial snowfall experienced in winter, with values topping 13.82" (351mm) in January and even spilling over into the month of December with 13.35" (339mm). Furthermore, the amount of daylight shifts significantly from a glowing 15.9 hours in June to a more subdued 8.5 hours in December.
The best time to visit Thompson Falls
When pondering a visit to Thompson Falls, consider the period from June to August as an optimal time. During this interval, the climate is the most agreeable, with temperatures ranging from 66.9°F (19.4°C) to 78.8°F (26°C) and a relative decrease of humidity from 71% to 53%. In addition to longer sunny days with 15.9 hours of daylight in June, it also endows tourists with extended hours of sunshine of up to 11.8 hours throughout July. This creates the perfect environment for exploring the outdoor wonders of Thompson Falls.The worst time to visit Thompson Falls
Visitors may find the winter months from December to February less inviting due to the harsh weather conditions. Over this period, the temperatures plummet from 28.9°F (-1.7°C) to 17.2°F (-8.2°C) coupled with high levels of humidity from 91% to 93%. Besides the intimidating chill, this time of year is characterized by heavy snowfall, with an overwhelming 13.82" (351mm) in January, and reduced daylight hours, diminishing from 9.3 hours in November to just 8.5 hours in December. Undoubtedly, these conditions might create hurdles for visitors seeking to explore and enjoy the natural wonders of Thompson Falls.Spring weather in Thompson Falls
The spring season in Thompson Falls from March to May witnesses an upward shift in temperature from 38.8°F (3.8°C) to 60.1°F (15.6°C). The average rainfall drops from 2.83" (72mm) in March to 1.57" (40mm) in May. Despite an increase in sunlight hours from 11.9 to 15.2 hours and a decrease in cloud percentage from 59% to 38%, the snowfall in March is still notable with a value of 7.83" (199mm).Summer weather in Thompson Falls
In contrast to spring, the summer months in Thompson Falls from June through August promise a warm and dry climate. Temperatures sit comfortably between 66.9°F (19.4°C) and 78.8°F (26°C), and humidity decreases to its lowest at 53%. The rainfall further recedes to a low of 0.43" (11mm) in July. Not to mention, this period celebrates the highest amount of daylight, peaking in June with 15.9 hours.Autumn weather in Thompson Falls
Autumn weather in Thompson Falls from September through November is marked by a gradual drop in temperature from 67.3°F (19.6°C) to 37.9°F (3.3°C). The rainfall increases slightly to 2.09" (53mm) in November. The number of daylight hours shortens from 12.6 hours in September to 9.3 hours in November. The first signs of winter appear in November with the return of light snowfall at 4.84" (123mm).Winter weather in Thompson Falls
During the winter months of December through February, Thompson Falls' climate is synonymous with cold temperatures dropping from 28.9°F (-1.7°C) to 17.2°F (-8.2°C) and increasing levels of humidity of up to 93% in January. The region's snowfall reaches its pinnacle during these months, topping at 13.82" (351mm) in January. The daylight hours also shrink to their shortest, with only 8.5 hours in December.Weather in January
January in Thompson Falls, Montana, ushers in the year with the quintessential winter months. Temperatures are predictably cold, particularly with low averages recording up to approximately 17.6°F (-8°C). The city is often shrouded in white, courtesy of the frequent snowfall experienced during this period. Weather in January »Weather in February
As winter advances into February, Thompson Falls experiences a slight uptick in temperatures, though it remains squarely within the winter season's range. Snowfall continues unabated as does the increased relative humidity of up to 91%. Weather in February »Weather in March
With the arrival of March, Thompson Falls witnesses a gradual shift in weather conditions. Notably, the average high temperature increases to 38.8°F (3.8°C), signaling the end of extreme winter and a transition towards spring. Snowfall frequency reduces, paving the way for the renewed presence of rain. Weather in March »Weather in April
Come April, Thompson Falls is in the clutch of Spring's warm embrace. Notwithstanding, snowfall persists up to 2.17" (55mm) but is significantly reduced compared to the previous months. The increasingly evident sun melts away the last vestiges of winter, as extended daylight hours take precedence. Weather in April »Weather in May
May weather in Thompson Falls announces itself with its signature blend of mild temperature highs and relative humidity decreasing to 71%. Snowfall becomes a thing of the past in this period as the city welcomes more rainfall instead. Weather in May »Weather in June
June introduces summer with a considerable increase in high temperatures, reaching up to a balmy 66.9°F (19.4°C) in Thompson Falls. The city basks in the glow of extended sunshine hours, celebrating the arrival of summer. Rainfall drops significantly; nevertheless, the scenery of Thompson Falls thrives, painting the city's landscape in vibrant summer hues. Weather in June »Weather in July
July arguably offers Thompson Falls the best of summer as high temperatures peak at approximately 78.8°F (26°C). Days are prolonged, characterized by abundant sunshine and significantly low rainfalls registering at a mere 0.43" (11mm). Weather in July »Weather in August
August in Thompson Falls continues the trend of high temperatures from July, reminiscent of cloudless skies and extended sunshine. Enduring the warmth of August requires residents to keep hydration in mind, as the UV index remains steady at 4. Weather in August »Weather in September
September in Thompson Falls signals the arrival of Autumn with noticeable subsiding high temperatures and an increase in rainfall. Thompson Falls celebrates the changing seasons, with the landscape gradually taking on best fall hues. Weather in September »Weather in October
October in Thompson Falls plunges deeper into Autumn, with high temperatures declining to 51.4°F (10.8°C). Rainfall becomes a frequent visitor as the cloud cover begins to regain ground. Days become noticeably shorter, and the leaves' vibrant colors create a stunning panorama. Weather in October »Weather in November
November in Thompson Falls translates into a significant dip in temperatures with a high averaging at 37.9°F (3.3°C). The weather grows colder and more weather variations emerge in the city's daily life. Snowfall swallows up Thompson Falls again, signaling the return of the winter season. Weather in November »Weather in December
December climate culminates in the most winter-centric weather of the year in Thompson Falls. A measurable snowfall of 13.35" (339mm) encapsulates the city creating a winter wonderland in its wake. The rising humidity combines with decreased sunlight hours, recording a short 8.5 hours, contributing to December's festive but chilly atmosphere. Weather in December »Updated: Aug 16, 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
January is the most humid month, with an average relative humidity of 93%.
The month with the most rainfall is January, when the rain falls for 13.3 days and typically aggregates up to 3.11" (79mm) of precipitation.
Throughout the year, there are 152.1 rainfall days, and 22.09" (561mm) of precipitation is accumulated.
January through May, September through December are months with snowfall.
Throughout the year, there are 90.2 snowfall days, and 58.15" (1477mm) of snow is accumulated.
The month with the least sunshine is January, with an average of 3.5h of sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 1.
The month with the most snowfall is February, when snow falls for 17.9 days and typically aggregates up to 15.12" (384mm) 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 through August are months without snowfall.
June has the longest days of the year, with an average of 15h and 54min of daylight.
The warmest period, with an average high-temperature of 78.8°F (26°C), falls in July and August.
July and August, with an average relative humidity of 53%, are the least humid months.
The month with the most sunshine is July, with an average of 11.8h of sunshine.
With an average maximum UV index of 6, July is the month with the highest UV index.
The month with the least rainfall is August, when the rain falls for 5.9 days and typically collects 0.39" (10mm) of precipitation.
The month of December sees the average lowest temperatures, reaching 28.9°F (-1.7°C) at the peak and 16.2°F (-8.8°C) at the low.
The month with the shortest days is December, with an average of 8h and 30min of daylight.
Average temperature
Thompson Falls, MT
The warmest months (with the highest average high temperature) are July and August (78.8°F).
The month with the lowest average high temperature is December (28.9°F).
The month with the highest average low temperature is August (45.7°F).
The coldest month (with the lowest average low temperature) is December (16.2°F).
Average pressure
Thompson Falls, MT
- 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:
29.95"Hg - Average pressure in August:
29.94"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:
30.17"Hg
The month with the highest atmospheric pressure is January (30.19"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Thompson Falls, MT
- Average wind speed in January:
4.2mph - Average wind speed in February:
4.2mph - Average wind speed in March:
4.5mph - Average wind speed in April:
4.9mph - Average wind speed in May:
4.4mph - Average wind speed in June:
4.7mph
- Average wind speed in July:
4.4mph - Average wind speed in August:
4.1mph - Average wind speed in September:
4.2mph - Average wind speed in October:
4.2mph - Average wind speed in November:
4.2mph - Average wind speed in December:
4mph
The windiest month (with the highest average wind speed) is April (4.9mph).
The calmest month (with the lowest average wind speed) is December (4mph).
Average humidity
Thompson Falls, MT
The month with the highest relative humidity is January (93%).
The months with the lowest relative humidity are July and August (53%).
Average rainfall
Thompson Falls, MT
- Average rainfall in January:
3.11" - Average rainfall in February:
2.76" - Average rainfall in March:
2.83" - Average rainfall in April:
2.24" - Average rainfall in May:
1.57" - Average rainfall in June:
1.3"
- Average rainfall in July:
0.43" - Average rainfall in August:
0.39" - Average rainfall in September:
0.59" - Average rainfall in October:
1.77" - Average rainfall in November:
2.09" - Average rainfall in December:
2.99"
The wettest month (with the highest rainfall) is January (3.11").
The driest month (with the least rainfall) is August (0.39").
Average rainfall days
Thompson Falls, MT
- Average rainfall days in January:
13.3 days - Average rainfall days in February:
12.3 days - Average rainfall days in March:
19.9 days - Average rainfall days in April:
19.2 days - Average rainfall days in May:
14.4 days - Average rainfall days in June:
12.6 days
- Average rainfall days in July:
6.3 days - Average rainfall days in August:
5.9 days - Average rainfall days in September:
7.8 days - Average rainfall days in October:
12.7 days - Average rainfall days in November:
15.5 days - Average rainfall days in December:
12.2 days
The month with the highest number of rainy days is March (19.9 days).
The month with the least rainy days is August (5.9 days).
Average snowfall
Thompson Falls, MT
- Average snowfall in January:
13.82" - Average snowfall in February:
15.12" - Average snowfall in March:
7.83" - Average snowfall in April:
2.17" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is February (15.12").
The months with the least snowfall are June, July and August (0").
Average snowfall days
Thompson Falls, MT
- Average snowfall days in January:
17.8 days - Average snowfall days in February:
17.9 days - Average snowfall days in March:
13.8 days - Average snowfall days in April:
5.9 days - Average snowfall days in May:
0.4 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:
2 days - Average snowfall days in November:
11.7 days - Average snowfall days in December:
20.4 days
The month with the highest number of snowfall days is December (20.4 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Thompson Falls, MT
- 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 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:
3h and 30min - Average sunshine in February:
4h and 30min - Average sunshine in March:
5h and 42min - Average sunshine in April:
7h and 48min - Average sunshine in May:
9h and 48min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
11h and 48min - Average sunshine in August:
11h and 36min - Average sunshine in September:
9h and 0min - Average sunshine in October:
6h and 42min - Average sunshine in November:
5h and 0min - Average sunshine in December:
3h and 48min
The month with the most sunshine is July (Average sunshine: 11h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Thompson Falls, MT
- Average sunshine days in January:
8.8 days - Average sunshine days in February:
6 days - Average sunshine days in March:
5.8 days - Average sunshine days in April:
7.9 days - Average sunshine days in May:
14.2 days - Average sunshine days in June:
15.8 days
- Average sunshine days in July:
23.3 days - Average sunshine days in August:
23.3 days - Average sunshine days in September:
20.3 days - Average sunshine days in October:
15.2 days - Average sunshine days in November:
8.7 days - Average sunshine days in December:
8.1 days
The months with the most sunshine days are July and August (23.3 days).
The month with the least sunshine days is March (5.8 days).
Average UV index
Thompson Falls, 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
Thompson Falls, MT
The month with the most cloud cover is February (Cloud cover 66).
The months with the least cloud cover are July and August (Cloud cover 15).
Average visibility
Thompson Falls, MT
The months with the highest visibility are June, July, August and September (6mi).
The months with the lowest visibility are January, February and December (3mi).
