Climate and monthly weather forecastSumner, NE
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Sumner, Nebraska, with an average temperature varying between 35.8°F (2.1°C) and 21°F (-6.1°C). During the coldest month, January, temperatures average a high of 35.8°F (2.1°C) and a low of 21°F (-6.1°C). Weather in January »Weather in February
February, the last month of the winter in Sumner, is also a wintry month, with an average temperature varying between 22.5°F (-5.3°C) and 38.3°F (3.5°C). Sumner measures an average high-temperature of a still wintry 38.3°F (3.5°C) in February, nearly consistent with the preceding month. Weather in February »Weather in March
The first month of the spring, March, is a fresh month in Sumner, Nebraska, with an average temperature ranging between min 33.8°F (1°C) and max 52.9°F (11.6°C). As Sumner welcomes March, the average high-temperature witnesses a distinct rise, moving from a wintry 38.3°F (3.5°C) in February to a cool 52.9°F (11.6°C). Weather in March »Weather in April
April in Sumner, Nebraska, is a mild spring month, with an average temperature fluctuating between 60.4°F (15.8°C) and 41.4°F (5.2°C). April introduces a minor temperature shift, with average high-temperatures adjusting from March's cool 52.9°F (11.6°C) to a refreshing 60.4°F (15.8°C). Weather in April »Weather in May
May, the last month of the spring in Sumner, is a pleasant month, with temperature in the range of an average high of 70°F (21.1°C) and an average low of 50.5°F (10.3°C). May indicates a change in the average high-temperature, moving up from a moderate 60.4°F (15.8°C) in April to a pleasant 70°F (21.1°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Sumner, Nebraska, with temperature in the range of an average high of 82.4°F (28°C) and an average low of 61.9°F (16.6°C). Sumner's weather in June shows a rise in the average high-temperature, moving up from May's agreeable 70°F (21.1°C) to a warm 82.4°F (28°C). Weather in June »Weather in July
July in Sumner, Nebraska, is a hot summer month, with an average temperature ranging between max 88.3°F (31.3°C) and min 65.5°F (18.6°C). July is the warmest month, with an average high-temperature of 88.3°F (31.3°C) and an average low-temperature of 65.5°F (18.6°C). Throughout July, the heat index is calculated to be a fiery hot 96.8°F (36°C). Weather in July »Weather in August
The last month of the summer, August, is another hot month in Sumner, Nebraska, with an average temperature fluctuating between 62.6°F (17°C) and 86.2°F (30.1°C). August's beginning signals an average high-temperature of a still tropical 86.2°F (30.1°C), barely different from July's 88.3°F (31.3°C). Weather in August »Weather in September
September, the first month of the autumn in Sumner, is still a warm month, with an average temperature ranging between min 56.1°F (13.4°C) and max 78.6°F (25.9°C). The onset of September is marked by a minor decrease in temperature, transitioning from a tropical 86.2°F (30.1°C) in August to a warm 78.6°F (25.9°C). Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Sumner, Nebraska, with temperature in the range of an average low of 43.7°F (6.5°C) and an average high of 62.6°F (17°C). As Sumner transitions into October, a noticeable drop in the average high-temperature is observed, falling from a moderately hot 78.6°F (25.9°C) in September to an enjoyable 62.6°F (17°C). Weather in October »Weather in November
The last month of the autumn, November, is another cool month in Sumner, Nebraska, with an average temperature fluctuating between 50.5°F (10.3°C) and 32.7°F (0.4°C). The average high-temperature drops in November, from October's refreshing 62.6°F (17°C) to a cool 50.5°F (10.3°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Sumner, Nebraska, with an average temperature fluctuating between 22.3°F (-5.4°C) and 36.9°F (2.7°C). The start of December signals a decrease in the average high-temperature, transitioning from a cool 50.5°F (10.3°C) in November to a cold 36.9°F (2.7°C). Weather in December »Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Sumner, NE
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (35.8°F).
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (21°F).
Average pressure
Sumner, NE
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.91"Hg - Average pressure in May:
29.91"Hg - Average pressure in June:
29.84"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.97"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed
Sumner, NE
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.7mph - Average wind speed in March:
11.2mph - Average wind speed in April:
11.9mph - Average wind speed in May:
10.3mph - Average wind speed in June:
9.8mph
- Average wind speed in July:
8.8mph - Average wind speed in August:
8.9mph - Average wind speed in September:
9.9mph - Average wind speed in October:
10.6mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10.3mph
The windiest month (with the highest average wind speed) is April (11.9mph).
The calmest month (with the lowest average wind speed) is July (8.8mph).
Average humidity
Sumner, NE
The month with the highest relative humidity is January (75%).
The month with the lowest relative humidity is October (58%).
Average rainfall
Sumner, NE
- Average rainfall in January:
0.51" - Average rainfall in February:
0.71" - Average rainfall in March:
1.5" - Average rainfall in April:
2.01" - Average rainfall in May:
3.03" - Average rainfall in June:
2.32"
- Average rainfall in July:
2.2" - Average rainfall in August:
1.89" - Average rainfall in September:
0.94" - Average rainfall in October:
1.54" - Average rainfall in November:
0.63" - Average rainfall in December:
1.06"
The wettest month (with the highest rainfall) is May (3.03").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days
Sumner, NE
- Average rainfall days in January:
4.8 days - Average rainfall days in February:
3.9 days - Average rainfall days in March:
9.1 days - Average rainfall days in April:
13 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
14.9 days
- Average rainfall days in July:
12.8 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
9.8 days - Average rainfall days in October:
7.8 days - Average rainfall days in November:
5.2 days - Average rainfall days in December:
5.1 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is February (3.9 days).
Average snowfall
Sumner, NE
- Average snowfall in January:
2.48" - Average snowfall in February:
3.62" - Average snowfall in March:
2.24" - Average snowfall in April:
0.91" - Average snowfall in May:
0.24" - Average snowfall in June:
0"
The month with the highest snowfall is February (3.62").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Sumner, NE
- Average snowfall days in January:
7.6 days - Average snowfall days in February:
7.4 days - Average snowfall days in March:
4.8 days - Average snowfall days in April:
1.8 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:
1.3 days - Average snowfall days in November:
2.3 days - Average snowfall days in December:
6.2 days
The month with the highest number of snowfall days is January (7.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Sumner, NE
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
5h and 54min - Average sunshine in February:
7h and 12min - Average sunshine in March:
7h and 42min - Average sunshine in April:
8h and 36min - Average sunshine in May:
9h and 30min - Average sunshine in June:
10h and 54min
- Average sunshine in July:
11h and 6min - Average sunshine in August:
10h and 24min - Average sunshine in September:
9h and 0min - Average sunshine in October:
7h and 18min - Average sunshine in November:
6h and 30min - Average sunshine in December:
6h and 6min
The month with the most sunshine is July (Average sunshine: 11h and 6min).
The month with the least sunshine is January (Average sunshine: 5h and 54min).
Average sunshine days
Sumner, NE
- Average sunshine days in January:
20.6 days - Average sunshine days in February:
18.3 days - Average sunshine days in March:
17.3 days - Average sunshine days in April:
13.4 days - Average sunshine days in May:
12 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
14.5 days - Average sunshine days in August:
14.6 days - Average sunshine days in September:
16.8 days - Average sunshine days in October:
20.2 days - Average sunshine days in November:
22.5 days - Average sunshine days in December:
21.8 days
The month with the most sunshine days is November (22.5 days).
The month with the least sunshine days is June (11.2 days).
Average UV index
Sumner, NE
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover
Sumner, NE
The month with the most cloud cover is February (Cloud cover 38).
The month with the least cloud cover is September (Cloud cover 22).
Average visibility
Sumner, NE
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





