Climate and monthly weather forecastSeymour, IA
Climate and monthly weather forecast
Weather in January
January, the same as December, in Seymour, Iowa, is a freezing cold winter month, with an average temperature ranging between min 16.5°F (-8.6°C) and max 30°F (-1.1°C). Seymour's coldest weather arrives in January, when temperatures average a high of 30°F (-1.1°C) and a low of 16.5°F (-8.6°C). Weather in January »Weather in February
The last month of the winter, February, is an icy month in Seymour, Iowa, with an average temperature ranging between min 19.8°F (-6.8°C) and max 34.2°F (1.2°C). With the onset of February, Seymour's average high-temperature clocks in at an icy 34.2°F (1.2°C), showing a minor fluctuation from the previous month. Weather in February »Weather in March
March, the first month of the spring in Seymour, is a chilly month, with temperature in the range of an average high of 48.7°F (9.3°C) and an average low of 33.4°F (0.8°C). Witnessing a clear rise in March, the average high-temperature escalates from February's icy 34.2°F (1.2°C) to a frosty 48.7°F (9.3°C). Weather in March »Weather in April
April is a moderate spring month in Seymour, Iowa, with temperature in the range of an average low of 42.8°F (6°C) and an average high of 60.4°F (15.8°C). April brings a temperature change, with average high-temperatures moving from March's chilly 48.7°F (9.3°C) to a refreshing 60.4°F (15.8°C). Weather in April »Weather in May
May, the last month of the spring in Seymour, is a pleasant month, with an average temperature ranging between max 69.4°F (20.8°C) and min 52.9°F (11.6°C). Seymour's weather in May shows a rise in the average high-temperature, moving up from April's moderate 60.4°F (15.8°C) to an agreeable 69.4°F (20.8°C). Weather in May »Weather in June
June, the first month of the summer in Seymour, is a moderately hot month, with an average temperature ranging between min 63.1°F (17.3°C) and max 79.7°F (26.5°C). In Seymour, the average high-temperature in June increases from an agreeable 69.4°F (20.8°C) in May to a moderately hot 79.7°F (26.5°C). Weather in June »Weather in July
July, the same as June, is another warm summer month in Seymour, Iowa, with temperature in the range of an average high of 83.3°F (28.5°C) and an average low of 66°F (18.9°C). Seymour's July weather, marked by an average high temperature of 83.3°F (28.5°C) and an average low temperature of 66°F (18.9°C), is the warmest in the year. During July, the heat index is appraised at a hot 93.2°F (34°C). Weather in July »Weather in August
The last month of the summer, August, is another warm month in Seymour, Iowa, with an average temperature fluctuating between 82°F (27.8°C) and 63.7°F (17.6°C). With the arrival of August, Seymour's average high-temperature registers at a still moderately hot 82°F (27.8°C), indicating a subtle variation from the previous month. Weather in August »Weather in September
The first month of the autumn, September, is also a moderately hot month in Seymour, Iowa, with an average temperature fluctuating between 56.5°F (13.6°C) and 75.9°F (24.4°C). September ushers in a minute temperature change, with average high-temperatures reducing from August's warm 82°F (27.8°C) to a still moderately hot 75.9°F (24.4°C). Weather in September »Weather in October
October, the same as September, is another refreshing autumn month in Seymour, Iowa, with an average temperature ranging between min 44.4°F (6.9°C) and max 61.7°F (16.5°C). The start of October involves a temperature drop, moving from a moderately hot 75.9°F (24.4°C) in September to a refreshing 61.7°F (16.5°C). Weather in October »Weather in November
The last month of the autumn, November, is another chilly month in Seymour, Iowa, with temperature in the range of an average high of 48.4°F (9.1°C) and an average low of 33.3°F (0.7°C). The arrival of November corresponds with a reduction in the average high-temperature, down from October's refreshing 61.7°F (16.5°C) to a frosty 48.4°F (9.1°C). Weather in November »Weather in December
The first month of the winter, December, is also an icy month in Seymour, Iowa, with an average temperature ranging between min 23.5°F (-4.7°C) and max 35.6°F (2°C). The beginning of December involves a decrease in the average high-temperature, transitioning from a chilly 48.4°F (9.1°C) in November to a wintry 35.6°F (2°C). Weather in December »Updated: Jul 15, 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
Seymour's temperature records reveal January as the coldest month, marked by average highs of 30°F (-1.1°C) and lows of 16.5°F (-8.6°C).
The months with the least rainfall are January and December Rain falls for 4.5 days and accumulates 0.71" (18mm) of rain.
Throughout the year, there are 125.7 rainfall days, and 20.39" (518mm) of precipitation is accumulated.
January through May, October through December are months with snowfall.
January is the month with the most snowfall. Snow falls for 8.6 days and accumulates 3.23" (82mm) of snow.
In Seymour, during the entire year, snow falls for 28.4 days and aggregates up to 11.34" (288mm) of snow.
January has the least sunshine of the year, with an average of 4.3h of sunshine.
The month with the lowest UV index is January, with an average maximum UV index of 1.
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.
With an average relative humidity of 83%, June is the most humid month.
June is the month with the most rainfall. Rain falls for 16.1 days and accumulates 3.31" (84mm) of precipitation.
In Seymour, snow does not fall in June through September.
June has the longest days of the year, with an average of 15h and 0min of daylight.
The months with the highest UV index are June through August, with an average maximum UV index of 6.
July temperatures tend to peak at an average high of 83.3°F (28.5°C) and dip to a low of 66°F (18.9°C).
With an average of 10.4h of sunshine, July has the most sunshine of the year.
With an average relative humidity of 72%, October is the least humid month.
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Seymour, IA
The warmest month (with the highest average high temperature) is July (83.3°F).
The month with the lowest average high temperature is January (30°F).
The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (16.5°F).
Average pressure
Seymour, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.89"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Seymour, IA
- Average wind speed in January:
10.6mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.6mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.8mph - Average wind speed in June:
8mph
The windiest months (with the highest average wind speed) are January and March (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity
Seymour, IA
The month with the highest relative humidity is June (83%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Seymour, IA
- Average rainfall in January:
0.71" - Average rainfall in February:
0.79" - Average rainfall in March:
1.61" - Average rainfall in April:
1.73" - Average rainfall in May:
2.76" - Average rainfall in June:
3.31"
- Average rainfall in July:
2.09" - Average rainfall in August:
2.2" - Average rainfall in September:
2.13" - Average rainfall in October:
1.38" - Average rainfall in November:
0.98" - Average rainfall in December:
0.71"
The wettest month (with the highest rainfall) is June (3.31").
The driest months (with the least rainfall) are January and December (0.71").
Average rainfall days
Seymour, IA
- Average rainfall days in January:
4.5 days - Average rainfall days in February:
4.6 days - Average rainfall days in March:
10.6 days - Average rainfall days in April:
13.3 days - Average rainfall days in May:
16.8 days - Average rainfall days in June:
16.1 days
- Average rainfall days in July:
14.3 days - Average rainfall days in August:
13.5 days - Average rainfall days in September:
11 days - Average rainfall days in October:
9 days - Average rainfall days in November:
6.5 days - Average rainfall days in December:
5.5 days
The month with the highest number of rainy days is May (16.8 days).
The month with the least rainy days is January (4.5 days).
Average snowfall
Seymour, IA
- Average snowfall in January:
3.23" - Average snowfall in February:
2.87" - Average snowfall in March:
1.26" - Average snowfall in April:
1.69" - Average snowfall in May:
0.08" - Average snowfall in June:
0"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Seymour, IA
- Average snowfall days in January:
8.6 days - Average snowfall days in February:
7.6 days - Average snowfall days in March:
3.5 days - Average snowfall days in April:
0.8 days - Average snowfall days in May:
0.2 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:
0.6 days - Average snowfall days in November:
1.4 days - Average snowfall days in December:
5.7 days
The month with the highest number of snowfall days is January (8.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Seymour, IA
- Average daylight in January:
9h and 42min - 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 0min
- Average daylight in July:
14h and 42min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - 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 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in January:
4h and 18min - Average sunshine in February:
4h and 54min - Average sunshine in March:
6h and 12min - Average sunshine in April:
8h and 6min - Average sunshine in May:
8h and 36min - Average sunshine in June:
9h and 54min
- Average sunshine in July:
10h and 24min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 18min - Average sunshine in October:
5h and 42min - Average sunshine in November:
5h and 36min - Average sunshine in December:
4h and 48min
The month with the most sunshine is July (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days
Seymour, IA
- Average sunshine days in January:
20.1 days - Average sunshine days in February:
17.5 days - Average sunshine days in March:
15.8 days - Average sunshine days in April:
14.8 days - Average sunshine days in May:
11.1 days - Average sunshine days in June:
10.7 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
14.3 days - Average sunshine days in September:
17.2 days - Average sunshine days in October:
19.9 days - Average sunshine days in November:
21.1 days - Average sunshine days in December:
20.9 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (10.7 days).
Average UV index
Seymour, IA
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Seymour, IA
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are July, August and September (Cloud cover 29).
Average visibility
Seymour, IA
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).
