Climate and monthly weather forecastMandan, ND
Climate and monthly weather forecast
The climate of Mandan
The climate in Mandan, North Dakota, USA, is classified by the Köppen system as Dfb. This means it is a humid continental climate characterized by no dry season and a warm summer period. This city, located in the Upper Midwest, is known for its significant variations in temperatures and precipitation levels over the seasons.A review of the climate data indicates that temperatures in Mandan can reach highs of 83.5°F (28.6°C) and dip as low as 6.3°F (-14.3°C) over the year. The highest recorded temperatures often occur in July, while January is typically the coldest month. The relative humidity indicates a pattern of drier conditions in the summer months, with levels dropping to around 55%, climbing back up to 89% in the winter months.
Rainfall varies noticeably in Mandan throughout the year. Generally, the city receives more rainfall during the summer season, with an average of 2.32" (59mm) in June. The winter season receives the least amount of rainfall, with drastic dips in November and December to an average of 0.55" (14mm) and 0.63" (16mm), respectively. Moreover, snowfall is a noteworthy aspect of this city's climate, experiencing the maximum levels in December with a considerable 3.31" (84mm).
The Best Time to visit Mandan
Given the variability of weather conditions, the optimal time to visit Mandan would be in the warmer months, between May to September. These months are accompanied by temperatures ranging from 51.4°F (10.8°C) to 82°F (27.8°C). The amount of daily sunshine increases dramatically during these months, reaching up to 10.6 hours in June, providing a typically clear and delightful day. Additionally, during these months, the city experiences lower relative humidity levels, further enhancing the comfort level for visitors.The Worst Time to Visit Mandan
The unfavorable time for a visit to Mandan would be in the cold winter months - December to February. During this period, temperatures plummet to as low as 11.3°F (-11.5°C), and snowfall rates can reach up to 3.31" (84mm). The hours of sunlight also reduce considerably to around 4.1 hours in December, indicating shorter days and prolonged darkness.Spring Weather in Mandan
Spring in Mandan, from March to May, is characterized by a steady increase in temperatures. From lows of 23.4°F (-4.8°C) in March, the temperature rises to highs of 64.9°F (18.3°C) by May. Rainfall begins to escalate during this season with up to 1.18" (30mm) in April and almost doubling to 1.93" (49mm) in May. The Spring season also signifies the transition from long, cold winter nights to longer daylight hours, as sunshine hours extend to 7.7 in April and 9.5 in May.Summer Weather in Mandan
Summer, spanning from June to August, is the warmest season in Mandan with temperatures reaching a peak of 83.5°F (28.6°C) in July. This season is also the wettest, experiencing the highest rainfall in June at 2.32" (59mm). Notwithstanding the high rainfall, these months have the lowest humidity levels, making conditions much less muggy. The season offers extended daylight hours, peaking at 15.8 hours in June, which reduces slightly to 15.4 hours in July.Autumn Weather in Mandan
Autumn in Mandan, September to November, is marked by a noticeable cooling trend. Temperatures begin to decrease, from a high of 71.8°F (22.1°C) in September to a low of 25.5°F (-3.6°C) in November. Although rainfall begins to decline, reaching 0.55" (14mm) in November, wind speeds start to pick up, with a steady increase from 8.5mph (13.7km/h) in September to 9.9mph (15.9km/h) in November.Winter Weather in Mandan
Mandan's winter season, December through February, is characterized by cold temperatures and significant snowfall. The temperature can dip to as low as 6.3°F (-14.3°C) in January while snowfall can reach up to 3.31" (84mm) in December. Consequentially, the winter season experiences a hike in humidity levels, rising to 87% in December and 89% in January, ensuring a chilly and damp environment. Thus, residents and visitors alike need to gear up to face the cold and snowy weather.Weather in January
In the city of Mandan, North Dakota, January heralds the onset of some severe winter conditions. This month is characterized by relatively high humidity, reaching up to 89%. Snowflakes are a frequent sight with an average snowfall of 2.56" (65mm) over about 11 days. Weather in January »Weather in February
In Mandan, the weather conditions in February remain quite similar to those in January, but there is a slight warming as the month progresses. February's temperature spectrum ranges from 7.7°F (-13.5°C) to 22.1°F (-5.5°C). Weather in February »Weather in March
In Mandan, March serves as a gateway to spring, featuring warmer temperatures and receding snowfall. Relative humidity drops from 87% in February to 80%, hinting at the atmospheric changes. The average snowfall in March is 2.91" (74mm), marking a downward trend from its January peak. Weather in March »Weather in April
April in Mandan, brings about a significant transition from the harsh winter to a milder spring. The mercury rises considerably, reaching up to 51.4°F (10.8°C), providing some respite from the prolonged cold spell. April also brings more precipitation than in March, heralding the arrival of spring showers. Weather in April »Weather in May
May in Mandan witnesses a major departure from the cold, snowy months, moving towards a much warmer and pleasant atmosphere. From 51.4°F (10.8°C) in April, the thermometers now show peaks of 64.9°F (18.3°C). May is also when you can expect a rise in rainfall, indicative of the spring season. Weather in May »Weather in June
June in Mandan brings forth the full bloom of summer with temperatures ascending further. The highest temperature recorded averages around 75.6°F (24.2°C), making it considerably warmer than May. The weather in June is characterised by less cloud cover, resulting in increased sunshine hours. Weather in June »Weather in July
The mid-summer month of July in Mandan is marked by the peak of warm weather conditions. The temperature spectrum of this month rests between 61.3°F (16.3°C) to 83.5°F (28.6°C), marking the highest average temperature of the year. Weather in July »Weather in August
In Mandan, August continues the trend of warm temperatures seen in July, although a subtle decline is observed as the month progresses. This month brings a slight respite in terms of humidity, which falls to 55%. Night times in August are relatively cooler than in July, making evenings pleasant. Weather in August »Weather in September
Come September, Mandan witnesses a shift towards autumn, marked by gradually falling temperatures and shifting weather patterns. The highest recorded temperature in this month falls to 71.8°F (22.1°C) from August's average of 82°F (27.8°C). Weather in September »Weather in October
October in Mandan brings an undeniable chill in the air, a significant departure from the balmy, summer months. This month experiences a further dip in temperature to an average high of 53.8°F (12.1°C). Snowfall makes a return with an average of 1.65" (42mm), heralding the onset of winter. Weather in October »Weather in November
November in Mandan is a prelude to the winter season with temperatures dipping drastically to an average high of 38.5°F (3.6°C) and a low of 25.5°F (-3.6°C). This month sees an increase in snowfall, rising to 2.52" (64mm), signaling the rapid onset of winter. Weather in November »Weather in December
December in Mandan is in the heart of the winter season with freezing average temperatures ranging between 11.3°F (-11.5°C) and 23°F (-5°C). Moreover, it receives the highest snowfall in the year, seeing 3.31" (84mm) on average. Weather in December »Updated: Jun 18, 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 stands out as Mandan's coldest month, with temperatures ranging between an average high of 20.7°F (-6.3°C) and a low of 6.3°F (-14.3°C).
The most humid month in Mandan is January, with an average relative humidity of 89%.
January is the month with the least rainfall. Rain falls for 3 days and accumulates 0.43" (11mm) of precipitation.
Throughout the year, there are 94.3 rainfall days, and 14.29" (363mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
Throughout the year, there are 58.6 snowfall days, and 18.27" (464mm) of snow is accumulated.
January has the least sunshine of the year in Mandan, with an average of 3.9h of sunshine.
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 month with the most rainfall is June, when the rain falls for 13.1 days and typically aggregates up to 2.32" (59mm) of precipitation.
June through September are months without snowfall.
The month with the longest days is June, with an average of 15h and 48min of daylight.
The warmest time of the year is July, with temperatures averaging a high of 83.5°F (28.6°C) and a low of 61.3°F (16.3°C).
With an average of 11.3h of sunshine, July has the most sunshine of the year.
With an average maximum UV index of 6, July is the month with the highest UV index.
August is the least humid month, with an average relative humidity of 55%.
November and December, with an average maximum UV index of 1, are months with the lowest UV index in Mandan.
December is the month with the most snowfall. Snow falls for 12.8 days and accumulates 3.31" (84mm) of snow.
December has the shortest days of the year, with an average of 8h and 36min of daylight.
Average temperature
Mandan, ND
The warmest month (with the highest average high temperature) is July (83.5°F).
The month with the lowest average high temperature is January (20.7°F).
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (6.3°F).
Average pressure
Mandan, ND
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.17"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.96"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.85"Hg
- Average pressure in July:
29.91"Hg - Average pressure in August:
29.91"Hg - Average pressure in September:
29.95"Hg - Average pressure in October:
29.97"Hg - Average pressure in November:
30.05"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is February (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.85"Hg).
Average wind speed
Mandan, ND
- Average wind speed in January:
10.2mph - Average wind speed in February:
9.1mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.8mph - Average wind speed in May:
10.1mph - Average wind speed in June:
9.4mph
- Average wind speed in July:
8.6mph - Average wind speed in August:
8.5mph - Average wind speed in September:
9.9mph - Average wind speed in October:
10.8mph - Average wind speed in November:
9.9mph - Average wind speed in December:
9.8mph
The windiest months (with the highest average wind speed) are April and October (10.8mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity
Mandan, ND
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (55%).
Average rainfall
Mandan, ND
- Average rainfall in January:
0.43" - Average rainfall in February:
0.51" - Average rainfall in March:
0.75" - Average rainfall in April:
1.18" - Average rainfall in May:
1.93" - Average rainfall in June:
2.32"
- Average rainfall in July:
1.69" - Average rainfall in August:
1.5" - Average rainfall in September:
1.46" - Average rainfall in October:
1.34" - Average rainfall in November:
0.55" - Average rainfall in December:
0.63"
The wettest month (with the highest rainfall) is June (2.32").
The driest month (with the least rainfall) is January (0.43").
Average rainfall days
Mandan, ND
- Average rainfall days in January:
3 days - Average rainfall days in February:
2.3 days - Average rainfall days in March:
6 days - Average rainfall days in April:
10 days - Average rainfall days in May:
12.7 days - Average rainfall days in June:
13.1 days
- Average rainfall days in July:
12.4 days - Average rainfall days in August:
11.1 days - Average rainfall days in September:
8.9 days - Average rainfall days in October:
8.1 days - Average rainfall days in November:
3.8 days - Average rainfall days in December:
2.9 days
The month with the highest number of rainy days is June (13.1 days).
The month with the least rainy days is February (2.3 days).
Average snowfall
Mandan, ND
- Average snowfall in January:
2.56" - Average snowfall in February:
3.19" - Average snowfall in March:
2.91" - Average snowfall in April:
1.97" - Average snowfall in May:
0.16" - Average snowfall in June:
0"
The month with the highest snowfall is December (3.31").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Mandan, ND
- Average snowfall days in January:
11.4 days - Average snowfall days in February:
11.1 days - Average snowfall days in March:
8.8 days - Average snowfall days in April:
4.3 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 days - Average snowfall days in October:
3 days - Average snowfall days in November:
6.9 days - Average snowfall days in December:
12.8 days
The month with the highest number of snowfall days is December (12.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Mandan, ND
- 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 36min - Average daylight in May:
15h and 6min - Average daylight in June:
15h and 48min
- Average daylight in July:
15h and 24min - Average daylight in August:
14h and 6min - Average daylight in September:
12h and 30min - Average daylight in October:
10h and 54min - Average daylight in November:
9h and 24min - Average daylight in December:
8h and 36min
The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).
- Average sunshine in January:
3h and 54min - Average sunshine in February:
4h and 42min - Average sunshine in March:
5h and 30min - Average sunshine in April:
7h and 42min - Average sunshine in May:
9h and 30min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
11h and 18min - Average sunshine in August:
10h and 54min - Average sunshine in September:
8h and 36min - Average sunshine in October:
6h and 30min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days
Mandan, ND
- Average sunshine days in January:
18.1 days - Average sunshine days in February:
16.4 days - Average sunshine days in March:
16.8 days - Average sunshine days in April:
15.7 days - Average sunshine days in May:
15.5 days - Average sunshine days in June:
14.6 days
- Average sunshine days in July:
14.9 days - Average sunshine days in August:
17.3 days - Average sunshine days in September:
20.1 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
20.2 days - Average sunshine days in December:
16.8 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is June (14.6 days).
Average UV index
Mandan, ND
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover
Mandan, ND
The month with the most cloud cover is February (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility
Mandan, ND
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, March and December (5mi).
