Climate and monthly weather forecastNapoleon, ND
Climate and monthly weather forecast
Weather in January
January, the same as December, in Napoleon, North Dakota, is another subzero cold winter month, with temperature in the range of an average low of 6.1°F (-14.4°C) and an average high of 20.8°F (-6.2°C). January stands out as Napoleon's coldest month, with an average high-temperature of 20.8°F (-6.2°C) and a low-temperature of 6.1°F (-14.4°C). Weather in January »Weather in February
The last month of the winter, February, is also a subzero cold month in Napoleon, North Dakota, with temperature in the range of an average low of 7.9°F (-13.4°C) and an average high of 22.3°F (-5.4°C). In February, Napoleon experiences a barely noticeable shift in meteorological conditions, with average high-temperatures moving from 20.8°F (-6.2°C) in January to a still freezing cold 22.3°F (-5.4°C). Weather in February »Weather in March
March, the first month of the spring in Napoleon, is a wintry month, with temperature in the range of an average high of 37.9°F (3.3°C) and an average low of 23.4°F (-4.8°C). The beginning of March marks a clear shift in the average high-temperature, advancing from February's freezing cold 22.3°F (-5.4°C) to a wintry 37.9°F (3.3°C). Weather in March »Weather in April
April in Napoleon, North Dakota, is a cool spring month, with an average temperature ranging between max 51.8°F (11°C) and min 34.5°F (1.4°C). Napoleon experiences a temperature shift with the start of April, with average high-temperatures moving from a wintry 37.9°F (3.3°C) in March to a fresh 51.8°F (11°C). Weather in April »Weather in May
May, the last month of the spring in Napoleon, is a refreshing month, with temperature in the range of an average high of 64.9°F (18.3°C) and an average low of 46.4°F (8°C). A rise in the average high-temperature is observed during May, moving from a fresh 51.8°F (11°C) in April to a comfortable 64.9°F (18.3°C). Weather in May »Weather in June
June, the first month of the summer in Napoleon, is a moderately hot month, with temperature in the range of an average low of 55.6°F (13.1°C) and an average high of 75.6°F (24.2°C). June brings an increase in the average high-temperature, progressing from a refreshing 64.9°F (18.3°C) in May to a moderately hot 75.6°F (24.2°C). Weather in June »Weather in July
July, like June, in Napoleon, North Dakota, is a moderately hot summer month, with an average temperature fluctuating between 83.7°F (28.7°C) and 61.3°F (16.3°C). July, having an average high-temperature of 83.7°F (28.7°C) and an average low-temperature of 61.3°F (16.3°C), is the warmest month. The heat index for July is calculated to be a tropical 86°F (30°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Napoleon, North Dakota, with temperature in the range of an average high of 82.2°F (27.9°C) and an average low of 60.3°F (15.7°C). August's arrival shows an average high-temperature of a still moderately hot 82.2°F (27.9°C), hardly different from the previous month. Weather in August »Weather in September
September, the first month of the autumn in Napoleon, is still a pleasant month, with an average temperature ranging between max 72°F (22.2°C) and min 52°F (11.1°C). As August shifts into September, a slight alteration in temperatures is observed, with average highs reducing from a warm 82.2°F (27.9°C) to a pleasant 72°F (22.2°C). Weather in September »Weather in October
October, the same as September, is another fresh autumn month in Napoleon, North Dakota, with an average temperature varying between 54°F (12.2°C) and 38.5°F (3.6°C). October's arrival is marked by a notable drop in high-temperatures, falling from a pleasant 72°F (22.2°C) in September to a cool 54°F (12.2°C). Weather in October »Weather in November
The last month of the autumn, November, is also an icy month in Napoleon, North Dakota, with an average temperature fluctuating between 38.7°F (3.7°C) and 25.5°F (-3.6°C). In November, the meteorological conditions markedly change with the average high-temperature descending from a fresh 54°F (12.2°C) in October to a cold 38.7°F (3.7°C). Weather in November »Weather in December
December, the first month of the winter in Napoleon, is also a subzero cold month, with an average temperature varying between 23.2°F (-4.9°C) and 11.3°F (-11.5°C). In Napoleon, the onset of December is marked by a decreased average high-temperature, declining from November's cold 38.7°F (3.7°C) to a subzero cold 23.2°F (-4.9°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Napoleon, ND
The warmest month (with the highest average high temperature) is July (83.7°F).
The month with the lowest average high temperature is January (20.8°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 (6.1°F).
Average pressure
Napoleon, ND
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.17"Hg - Average pressure in March:
30.07"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
Napoleon, ND
- Average wind speed in January:
9.9mph - Average wind speed in February:
8.9mph - Average wind speed in March:
10mph - Average wind speed in April:
10.7mph - Average wind speed in May:
10mph - Average wind speed in June:
9.3mph
- Average wind speed in July:
8.5mph - Average wind speed in August:
8.3mph - Average wind speed in September:
9.8mph - Average wind speed in October:
10.6mph - Average wind speed in November:
9.8mph - Average wind speed in December:
9.6mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity
Napoleon, ND
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is August (55%).
Average rainfall
Napoleon, ND
- Average rainfall in January:
0.59" - Average rainfall in February:
0.67" - Average rainfall in March:
0.98" - Average rainfall in April:
1.42" - Average rainfall in May:
2.17" - Average rainfall in June:
2.28"
- Average rainfall in July:
1.61" - Average rainfall in August:
1.38" - Average rainfall in September:
1.22" - Average rainfall in October:
1.3" - Average rainfall in November:
0.63" - Average rainfall in December:
0.75"
The wettest month (with the highest rainfall) is June (2.28").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days
Napoleon, ND
- Average rainfall days in January:
4 days - Average rainfall days in February:
3.4 days - Average rainfall days in March:
9.1 days - Average rainfall days in April:
12.4 days - Average rainfall days in May:
15.5 days - Average rainfall days in June:
14.8 days
- Average rainfall days in July:
11.8 days - Average rainfall days in August:
9.7 days - Average rainfall days in September:
8.9 days - Average rainfall days in October:
8.6 days - Average rainfall days in November:
4.1 days - Average rainfall days in December:
3.6 days
The month with the highest number of rainy days is May (15.5 days).
The month with the least rainy days is February (3.4 days).
Average snowfall
Napoleon, ND
- Average snowfall in January:
3.58" - Average snowfall in February:
4.33" - Average snowfall in March:
4.25" - Average snowfall in April:
2.36" - Average snowfall in May:
0.2" - Average snowfall in June:
0"
The month with the highest snowfall is February (4.33").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Napoleon, ND
- Average snowfall days in January:
14.8 days - Average snowfall days in February:
15 days - Average snowfall days in March:
10.8 days - Average snowfall days in April:
5.4 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 days - Average snowfall days in October:
3.2 days - Average snowfall days in November:
8.4 days - Average snowfall days in December:
15.7 days
The month with the highest number of snowfall days is December (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Napoleon, ND
- Average daylight in January:
9h and 6min - Average daylight in February:
10h and 24min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 36min - Average daylight in May:
15h and 0min - 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 42min
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 42min).
- Average sunshine in January:
3h and 48min - Average sunshine in February:
4h and 36min - Average sunshine in March:
5h and 30min - Average sunshine in April:
7h and 36min - Average sunshine in May:
9h and 30min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
11h and 24min - Average sunshine in August:
11h and 0min - 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 0min
The month with the most sunshine is July (Average sunshine: 11h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Napoleon, ND
- Average sunshine days in January:
13.8 days - Average sunshine days in February:
12.6 days - Average sunshine days in March:
12.3 days - Average sunshine days in April:
12.7 days - Average sunshine days in May:
12.8 days - Average sunshine days in June:
13.2 days
- Average sunshine days in July:
16.5 days - Average sunshine days in August:
18.8 days - Average sunshine days in September:
19.9 days - Average sunshine days in October:
18.8 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
14.1 days
The month with the most sunshine days is September (19.9 days).
The month with the least sunshine days is March (12.3 days).
Average UV index
Napoleon, ND
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover
Napoleon, ND
The month with the most cloud cover is February (Cloud cover 60).
The months with the least cloud cover are July and August (Cloud cover 21).
Average visibility
Napoleon, 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).





