Climate and monthly weather forecastSumpter, OK
Climate and monthly weather forecast
Weather in January
January, the same as December, in Sumpter, Oklahoma, is a frosty winter month, with temperature in the range of an average high of 45.5°F (7.5°C) and an average low of 28.8°F (-1.8°C). Sumpter records the coldest temperatures in January, averaging a high of 45.5°F (7.5°C) and a low of 28.8°F (-1.8°C). Weather in January »Weather in February
The last month of the winter, February, is another chilly month in Sumpter, Oklahoma, with an average temperature fluctuating between 48.7°F (9.3°C) and 31.5°F (-0.3°C). The transition into February is marked with an average high-temperature of a still chilly 48.7°F (9.3°C), showing an insignificant shift from January's 45.5°F (7.5°C). Weather in February »Weather in March
March, the first month of the spring in Sumpter, is a moderate month, with an average temperature fluctuating between 41.5°F (5.3°C) and 60.1°F (15.6°C). Sumpter sees a rise in temperature during March, with average high-temperatures transitioning from a chilly 48.7°F (9.3°C) in February to a mild 60.1°F (15.6°C). Weather in March »Weather in April
April in Sumpter, Oklahoma, is a comfortable spring month, with an average temperature fluctuating between 48.9°F (9.4°C) and 67.8°F (19.9°C). With the start of April, the average high-temperature marginally shifts from March's 60.1°F (15.6°C) to a still refreshing 67.8°F (19.9°C). Weather in April »Weather in May
The last month of the spring, May, is a warm month in Sumpter, Oklahoma, with an average temperature varying between 58.6°F (14.8°C) and 76.8°F (24.9°C). With the onset of May, Sumpter sees a temperature rise, with the average high-temperature moving from April's comfortable 67.8°F (19.9°C) to a warm 76.8°F (24.9°C). Weather in May »Weather in June
The first month of the summer, June, is a hot month in Sumpter, Oklahoma, with an average temperature varying between 89.2°F (31.8°C) and 70°F (21.1°C). An escalation in the average high-temperature is seen with the onset of June, moving from a warm 76.8°F (24.9°C) in May to a hot 89.2°F (31.8°C). Weather in June »Weather in July
July, like June, is another hot summer month in Sumpter, Oklahoma, with an average temperature ranging between max 93.7°F (34.3°C) and min 73°F (22.8°C). The warmest time of the year is July, with temperatures averaging a high of 93.7°F (34.3°C) and a low of 73°F (22.8°C). July's average heat index is appraised at a blisteringly hot 109.4°F (43°C). Weather in July »Weather in August
The last month of the summer, August, is also a hot month in Sumpter, Oklahoma, with an average temperature varying between 71.1°F (21.7°C) and 91.6°F (33.1°C). The advent of August brings an average high-temperature of a still tropical 91.6°F (33.1°C), almost identical to the preceding month. Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Sumpter, Oklahoma, with an average temperature ranging between min 64.4°F (18°C) and max 83.5°F (28.6°C). Sumpter in September undergoes a slight reduction in the average high-temperature, shifting from August's tropical 91.6°F (33.1°C) to a warm 83.5°F (28.6°C). Weather in September »Weather in October
October, the same as September, in Sumpter, Oklahoma, is an agreeable autumn month, with temperature in the range of an average low of 51.8°F (11°C) and an average high of 69.8°F (21°C). October's arrival coincides with a drop in the average high-temperature, decreasing from September's warm 83.5°F (28.6°C) to an agreeable 69.8°F (21°C). Weather in October »Weather in November
November, the last month of the autumn in Sumpter, is another refreshing month, with an average temperature ranging between max 57.7°F (14.3°C) and min 40.3°F (4.6°C). The beginning of November involves a decrease in the average high-temperature, transitioning from a pleasant 69.8°F (21°C) in October to a moderate 57.7°F (14.3°C). Weather in November »Weather in December
December, the first month of the winter in Sumpter, is also a frosty month, with temperature in the range of an average high of 46.6°F (8.1°C) and an average low of 30.7°F (-0.7°C). December comes with a decrease in the average high-temperature, falling from a moderate 57.7°F (14.3°C) in November to a frosty 46.6°F (8.1°C). Weather in December »Updated: Jun 4, 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 Sumpter's coldest month, with temperatures ranging between an average high of 45.5°F (7.5°C) and a low of 28.8°F (-1.8°C).
Throughout the year, there are 116.1 rainfall days, and 21.57" (548mm) of precipitation is accumulated.
January through March, October through December are months with snowfall.
In Sumpter, during the entire year, snow falls for 7.6 days and aggregates up to 2.6" (66mm) of snow.
The months with the least sunshine in Sumpter are January and December, with an average of 6.2h of sunshine.
January and December, with an average maximum UV index of 2, are months with the lowest UV index.
The month with the most snowfall is February, when snow falls for 2.4 days and typically aggregates up to 0.91" (23mm) of snow.
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.
April through September are months without snowfall.
The most humid month is May, with an average relative humidity of 74%.
The month with the most rainfall is May, when the rain falls for 15 days and typically aggregates up to 4.09" (104mm) of precipitation.
The month with the longest days is June, with an average of 14h and 42min of daylight.
June through August, with an average maximum UV index of 7, are months with the highest UV index.
In Sumpter, July registers the highest temperatures, averaging 93.7°F (34.3°C) at the peak and 73°F (22.8°C) at the lowest.
July is the least humid month, with an average relative humidity of 61%.
With an average of 11.3h of sunshine, August has the most sunshine of the year.
December is the month with the least rainfall in Sumpter. Rain falls for 4.7 days and accumulates 0.59" (15mm) of precipitation.
With an average of 9h and 42min of daylight, December has the shortest days of the year.
Average temperature
Sumpter, OK
The warmest month (with the highest average high temperature) is July (93.7°F).
The month with the lowest average high temperature is January (45.5°F).
The month with the highest average low temperature is July (73°F).
The coldest month (with the lowest average low temperature) is January (28.8°F).
Average pressure
Sumpter, OK
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.02"Hg - Average pressure in April:
29.9"Hg - Average pressure in May:
29.9"Hg - Average pressure in June:
29.87"Hg
- Average pressure in July:
29.92"Hg - Average pressure in August:
29.93"Hg - Average pressure in September:
29.98"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).
Average wind speed
Sumpter, OK
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.6mph - Average wind speed in March:
11.2mph - Average wind speed in April:
11.4mph - Average wind speed in May:
9.9mph - Average wind speed in June:
10.1mph
- Average wind speed in July:
8.5mph - Average wind speed in August:
8.3mph - Average wind speed in September:
8.9mph - Average wind speed in October:
9.9mph - Average wind speed in November:
10.5mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (11.4mph).
The calmest month (with the lowest average wind speed) is August (8.3mph).
Average humidity
Sumpter, OK
The month with the highest relative humidity is May (74%).
The month with the lowest relative humidity is July (61%).
Average rainfall
Sumpter, OK
- Average rainfall in January:
0.75" - Average rainfall in February:
0.75" - Average rainfall in March:
1.42" - Average rainfall in April:
2.2" - Average rainfall in May:
4.09" - Average rainfall in June:
1.85"
- Average rainfall in July:
2.05" - Average rainfall in August:
2.28" - Average rainfall in September:
2.36" - Average rainfall in October:
2.52" - Average rainfall in November:
0.71" - Average rainfall in December:
0.59"
The wettest month (with the highest rainfall) is May (4.09").
The driest month (with the least rainfall) is December (0.59").
Average rainfall days
Sumpter, OK
- Average rainfall days in January:
4.5 days - Average rainfall days in February:
5.8 days - Average rainfall days in March:
10 days - Average rainfall days in April:
12.7 days - Average rainfall days in May:
15 days - Average rainfall days in June:
11.3 days
- Average rainfall days in July:
12 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
11.8 days - Average rainfall days in October:
10 days - Average rainfall days in November:
6 days - Average rainfall days in December:
4.7 days
The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (4.5 days).
Average snowfall
Sumpter, OK
The month with the highest snowfall is February (0.91").
The months with the least snowfall are April, May, June, July, August and September (0").
Average snowfall days
Sumpter, OK
- Average snowfall days in January:
2.2 days - Average snowfall days in February:
2.4 days - Average snowfall days in March:
0.9 days - Average snowfall days in April:
0.1 days - Average snowfall days in May:
0 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:
0.1 days - Average snowfall days in November:
0.5 days - Average snowfall days in December:
1.4 days
The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Sumpter, OK
- Average daylight in January:
10h and 0min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 12min - Average daylight in May:
14h and 12min - Average daylight in June:
14h and 42min
- Average daylight in July:
14h and 24min - Average daylight in August:
13h and 30min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 12min - Average daylight in November:
10h and 12min - Average daylight in December:
9h and 42min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in January:
6h and 12min - Average sunshine in February:
7h and 18min - Average sunshine in March:
7h and 24min - Average sunshine in April:
8h and 36min - Average sunshine in May:
9h and 24min - Average sunshine in June:
11h and 6min
- Average sunshine in July:
11h and 12min - Average sunshine in August:
11h and 18min - Average sunshine in September:
8h and 42min - Average sunshine in October:
6h and 54min - Average sunshine in November:
6h and 24min - Average sunshine in December:
6h and 12min
The month with the most sunshine is August (Average sunshine: 11h and 18min).
The months with the least sunshine are January and December (Average sunshine: 6h and 12min).
Average sunshine days
Sumpter, OK
- Average sunshine days in January:
24 days - Average sunshine days in February:
19.8 days - Average sunshine days in March:
18.3 days - Average sunshine days in April:
16.3 days - Average sunshine days in May:
13.7 days - Average sunshine days in June:
16.1 days
- Average sunshine days in July:
16.3 days - Average sunshine days in August:
15.2 days - Average sunshine days in September:
15.3 days - Average sunshine days in October:
19 days - Average sunshine days in November:
22.3 days - Average sunshine days in December:
23.7 days
The month with the most sunshine days is January (24 days).
The month with the least sunshine days is May (13.7 days).
Average UV index
Sumpter, OK
The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Sumpter, OK
The month with the most cloud cover is March (Cloud cover 37).
The month with the least cloud cover is August (Cloud cover 19).
Average visibility
Sumpter, OK
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).
