Climate and monthly weather forecastThief River Falls, MN
Climate and monthly weather forecast
The climate of Thief River Falls
Thief River Falls, Minnesota, USA, sits in a humid continental climate zone. In accordance with the Köppen climate classification, it is categorized as Dfb; this implies no dry season and a warm summer. Over the space of twelve months, the weather conditions can be largely diverse.Throughout the year, temperatures fluctuate significantly from 0°F (-17.8°C) up to 78.4°F (25.8°C). Higher temperatures dominate in July with 78.4°F (25.8°C) while February and December experience the lowest temperatures at 0°F (-17.8°C) and 7.5°F (-13.6°C) respectively. Also, relative humidity ranges from 66% in May to 93% in January and February.
Data on rainfall shows an average rainfall of between 0.63" (16mm) in January and February to 3.15" (80mm) in June. The occurrence of rains spans from 1.9 days in January to 16.3 days in June. On the other hand, snowfall ranges from zero inches in summer months (June to August) to 5.24" (133mm) in December.
It is of significant interest that hours of daylight fluctuate from 15.6 hours in July to 8.5 hours in December. In close relation to this, sunshine extends from 10.6 hours in July to 2.3 hours in January.
The best time to visit Thief River Falls
The best time to visit Thief River Falls is highly dependent on the visitor's weather preferences. However, June to August appear most favorable. Temperatures are at their maximum within this period, coupled with extended daylight hours (15.6 hours to 16 hours). These conditions enhance a variety of outdoor activities. Although rainfall is at its peak, the occurrence is less frequent (10.3 days to 16.3 days), keeping the majority of the days dry.The worst time to visit Thief River Falls
The least conducive period for a visit appears to be within the colder months, especially December. With temperatures declining to 7.5°F (-13.6°C) and snowfall reaching 5.24" (133mm), outdoor activities become limited. Notably, there are fewer daylight hours (8.5 hours), which further restricts the range of possible activities.Spring weather in Thief River Falls
Spring weather in Thief River Falls (March to May) comes with moderate temperatures. These range from 32.2°F (0.1°C) in March to 63.3°F (17.4°C) in May. The relative humidity shifts downwards, falling from 88% to 66%. Rainfall during this period moderately increases from 0.98" (25mm) in March to 2.24" (57mm) in May while total snowfall decreases significantly from 3.7" (94mm) in March to nearly zero in May.Summer weather in Thief River Falls
Thief River Falls experiences its warmest weather during summer (June to August). Temperatures escalate to between 72°F (22.2°C) and 78.4°F (25.8°C). Daylight hours extend to maximum with 16 hours in June. Relative to other periods, rainfall takes a steep climb, reaching a peak of 3.15" (80mm) in June.Autumn weather in Thief River Falls
Autumn weather from September to November sees temperatures drop from 68.9°F (20.5°C) to 34.3°F (1.3°C). The duration of daylight decreases from 12.6 hours to 9.3 hours. Autumn experiences a decline in rainfall, dropping from a rate of 2.09" (53mm) in October down to 0.67" (17mm) in November.Winter weather in Thief River Falls
Winters in Thief River Falls are notably cold. From December to February, temperatures decrease to between 7.5°F (-13.6°C) and 18.5°F (-7.5°C). Ice and snow become more common as temperatures drop below the freezing point. Snowfall reaches a high point of 5.24" (133mm) in December.Weather in January
January is marked by winter's icy grip, with the average temperature high of just 13.8°F (-10.1°C) and the lowest of 0°F (-17.8°C). During January the city is painted in white owing to the high frequency of snowfall days. The limited daylight hours coupled with a sun duration of less than half the daylight contributes to this chilly sensation. Weather in January »Weather in February
In February, the chilling cold of January sees a slight relief. This period witnesses an average temperature high and low, rising from January, with conditions remaining relatively dry due to less than an inch of precipitation. Weather in February »Weather in March
March sees an increase in temperature to 32.2°F (0.1°C) and 18.3°F (-7.6°C) for the average highs and lows, paving the way for the onset of spring. It lures more precipitation than February, including increased rainfall. Even though the daylight hours extend, the sunlight duration sees a significant improvement. Weather in March »Weather in April
Spring firmly establishes itself in April with an average high temperature escalating to a comfortable 48.7°F (9.3°C), while lows average at 32.7°F (0.4°C). April heralds an era of further climate shift, witnessing increased precipitation, which primarily falls as rain instead of snow. Weather in April »Weather in May
May brings a significant rise in temperature, with temperatures hovering in the warmer range. The increased temperatures bolster the creation of a more humid environment. While the month experiences higher rainfall, it also houses the longest sunshine duration, balancing the weather conditions adequately. Weather in May »Weather in June
In June, Thief River Falls, Minnesota, is graced with summer, raising the average temperature highs to 72°F (22.2°C) with lows over 50°F (10°C). It's the wettest month with rainfall reaching 3.15" (80mm) alongside the highest relative humidity. Weather in June »Weather in July
July is the hottest month, having temperature highs and lows hitting 78.4°F (25.8°C) and 58.8°F (14.9°C) respectively. Rainfall reduces compared to June, providing visitors more leeway to engage in outdoor activities in Thief River Falls, Minnesota. Weather in July »Weather in August
The weather in August experiences insignificant changes compared to July except for a slight dip in the average temperature and an increase in cloud cover. August continues to uphold long daylight hours and an extended duration of sunlight. Weather in August »Weather in September
September signifies a transition towards fall, with temperatures decreasing to an average high of 68.9°F (20.5°C) and low of 49.8°F (9.9°C). Though rainfall remains static in comparison to August, the frequency of rainfall days sees an increase. Weather in September »Weather in October
In October, the ambiance in Thief River Falls, Minnesota, becomes significantly cooler, indicating the beginning of shorter days. The cloud cover ascends again, reducing the sunshine duration further. The wind speed sees an uptick, making it the windiest month of the year. Weather in October »Weather in November
November is characterized by a considerable drop in temperature to an average high of 34.3°F (1.3°C) and a low of 23.4°F (-4.8°C), acknowledging the approach of winter. With the reduction in daylight hours and lesser hours of sunshine, November experiences an increased frequency of snowfall days. Weather in November »Weather in December
December welcomes winter with the lowest temperature averaging around 18.5°F (-7.5°C) for the maximum and 7.5°F (-13.6°C) for the minimum. It observes the highest snowfall in the form of 5.24" (133mm) with the increased frequency of snow days. Weather in December »Updated: Feb 12, 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
Thief River Falls's coldest weather arrives in January, when temperatures average a high of 13.8°F (-10.1°C) and a low of -0°F (-17.8°C).
January and February, with an average relative humidity of 93%, are most humid months in Thief River Falls.
January and February are months with the least rain in Thief River Falls, Minnesota, when the rain falls for 1.9 days and typically aggregates up to 0.63" (16mm) of rain.
Throughout the year, there are 104.3 rainfall days, and 18.39" (467mm) of precipitation is accumulated.
January through May, October through December are months with snowfall in Thief River Falls, Minnesota.
Throughout the year, in Thief River Falls, Minnesota, there are 81.1 snowfall days, and 25.08" (637mm) of snow is accumulated.
January has the least sunshine of the year in Thief River Falls, Minnesota, with an average of 2.3h of sunshine.
January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
The months with the lowest humidity in Thief River Falls are May and August, with an average relative humidity of 66%.
June is the month with the most rainfall in Thief River Falls. Rain falls for 16.3 days and accumulates 3.15" (80mm) of precipitation.
June through September are months without snowfall in Thief River Falls, Minnesota.
The month with the longest days is June, with an average of 16h and 0min of daylight.
The warmest period is usually observed in July and August, with the average high-temperature peaking at 78.4°F (25.8°C).
July has the most sunshine of the year in Thief River Falls, Minnesota, with an average of 10.6h of sunshine.
With an average maximum UV index of 6, July is the month with the highest UV index in Thief River Falls, Minnesota.
The month with the most snowfall in Thief River Falls is December, when snow falls for 16.2 days and typically aggregates up to 5.24" (133mm) of snow.
December has the shortest days of the year in Thief River Falls, with an average of 8h and 24min of daylight.
Average temperature
Thief River Falls, MN
The warmest months (with the highest average high temperature) are July and August (78.4°F).
The month with the lowest average high temperature is January (13.8°F).
The month with the highest average low temperature is July (58.8°F).
The coldest month (with the lowest average low temperature) is January (0°F).
Average pressure
Thief River Falls, MN
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.16"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
29.99"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
29.95"Hg - Average pressure in November:
30.03"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is February (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed
Thief River Falls, MN
- Average wind speed in January:
9.5mph - Average wind speed in February:
9.1mph - Average wind speed in March:
9.2mph - Average wind speed in April:
9.8mph - Average wind speed in May:
9.3mph - Average wind speed in June:
8.5mph
- Average wind speed in July:
7.9mph - Average wind speed in August:
8mph - Average wind speed in September:
9.4mph - Average wind speed in October:
10.1mph - Average wind speed in November:
9.7mph - Average wind speed in December:
9.2mph
The windiest month (with the highest average wind speed) is October (10.1mph).
The calmest month (with the lowest average wind speed) is July (7.9mph).
Average humidity
Thief River Falls, MN
The months with the highest relative humidity are January and February (93%).
The months with the lowest relative humidity are May and August (66%).
Average rainfall
Thief River Falls, MN
- Average rainfall in January:
0.63" - Average rainfall in February:
0.63" - Average rainfall in March:
0.98" - Average rainfall in April:
1.3" - Average rainfall in May:
2.24" - Average rainfall in June:
3.15"
- Average rainfall in July:
2.4" - Average rainfall in August:
1.69" - Average rainfall in September:
1.69" - Average rainfall in October:
2.09" - Average rainfall in November:
0.67" - Average rainfall in December:
0.91"
The wettest month (with the highest rainfall) is June (3.15").
The driest months (with the least rainfall) are January and February (0.63").
Average rainfall days
Thief River Falls, MN
- Average rainfall days in January:
1.9 days - Average rainfall days in February:
2.3 days - Average rainfall days in March:
7.5 days - Average rainfall days in April:
10.1 days - Average rainfall days in May:
14.2 days - Average rainfall days in June:
16.3 days
- Average rainfall days in July:
13.6 days - Average rainfall days in August:
10.3 days - Average rainfall days in September:
10.4 days - Average rainfall days in October:
10.5 days - Average rainfall days in November:
4.7 days - Average rainfall days in December:
2.5 days
The month with the highest number of rainy days is June (16.3 days).
The month with the least rainy days is January (1.9 days).
Average snowfall
Thief River Falls, MN
The month with the highest snowfall is December (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Thief River Falls, MN
- Average snowfall days in January:
16.1 days - Average snowfall days in February:
13.6 days - Average snowfall days in March:
12.8 days - Average snowfall days in April:
5.7 days - Average snowfall days in May:
0.5 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:
0.1 days - Average snowfall days in October:
4.1 days - Average snowfall days in November:
12 days - Average snowfall days in December:
16.2 days
The month with the highest number of snowfall days is December (16.2 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight / Average sunshine
Thief River Falls, MN
- 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:
2h and 18min - Average sunshine in February:
2h and 30min - Average sunshine in March:
4h and 6min - Average sunshine in April:
7h and 18min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 24min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
10h and 18min - Average sunshine in September:
8h and 30min - Average sunshine in October:
5h and 0min - Average sunshine in November:
3h and 54min - Average sunshine in December:
2h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 2h and 18min).
Average sunshine days
Thief River Falls, MN
- Average sunshine days in January:
14.3 days - Average sunshine days in February:
14.5 days - Average sunshine days in March:
13.1 days - Average sunshine days in April:
14.4 days - Average sunshine days in May:
15.3 days - Average sunshine days in June:
11.3 days
- Average sunshine days in July:
14.6 days - Average sunshine days in August:
18.5 days - Average sunshine days in September:
17.7 days - Average sunshine days in October:
15.6 days - Average sunshine days in November:
16.1 days - Average sunshine days in December:
15.2 days
The month with the most sunshine days is August (18.5 days).
The month with the least sunshine days is June (11.3 days).
Average UV index
Thief River Falls, MN
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
Thief River Falls, MN
The months with the most cloud cover are January and February (Cloud cover 75).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility
Thief River Falls, MN
The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The months with the lowest visibility are January, February and December (4mi).
