Climate and monthly weather forecastOnslow, IA
Climate and monthly weather forecast
Weather in January
January, the same as December, in Onslow, Iowa, is another subzero cold winter month, with temperature in the range of an average high of 25.2°F (-3.8°C) and an average low of 13.3°F (-10.4°C). In Onslow, Iowa, January is the month with the lowest recorded average temperatures, measuring a high of 25.2°F (-3.8°C) and a low of 13.3°F (-10.4°C). Weather in January »Weather in February
The last month of the winter, February, is another freezing cold month in Onslow, Iowa, with an average temperature varying between 16°F (-8.9°C) and 28.9°F (-1.7°C). Onslow sees the arrival of February with an average high-temperature of a still freezing cold 28.9°F (-1.7°C), indicating a subtle variation from January. Weather in February »Weather in March
March, the first month of the spring in Onslow, is a frosty month, with temperature in the range of an average high of 44.2°F (6.8°C) and an average low of 29.5°F (-1.4°C). The arrival of March is marked by a notable increase in high-temperatures, climbing from a freezing cold 28.9°F (-1.7°C) in February to a frosty 44.2°F (6.8°C). Weather in March »Weather in April
April is a moderate spring month in Onslow, Iowa, with an average temperature varying between 39.9°F (4.4°C) and 56.1°F (13.4°C). Onslow's transition into April is marked by a rise in the average high-temperature, advancing from a chilly 44.2°F (6.8°C) in March to a moderate 56.1°F (13.4°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Onslow, Iowa, with an average temperature fluctuating between 68.4°F (20.2°C) and 51.1°F (10.6°C). Onslow in May shows a temperature shift, moving from an average high of a refreshing 56.1°F (13.4°C) in April to a pleasant 68.4°F (20.2°C). Weather in May »Weather in June
The first month of the summer, June, is a moderately hot month in Onslow, Iowa, with an average temperature fluctuating between 60.4°F (15.8°C) and 77°F (25°C). The start of June brings a subtle shift in the average high-temperature, edging up from May's agreeable 68.4°F (20.2°C) to a warm 77°F (25°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Onslow, Iowa, with an average temperature varying between 80.1°F (26.7°C) and 63.3°F (17.4°C). The warmest month is July, with an average high-temperature of 80.1°F (26.7°C) and an average low-temperature of 63.3°F (17.4°C). Weather in July »Weather in August
August, the last month of the summer in Onslow, is also a moderately hot month, with temperature in the range of an average high of 78.6°F (25.9°C) and an average low of 60.6°F (15.9°C). With the arrival of August, Onslow's average high-temperature registers at a still moderately hot 78.6°F (25.9°C), indicating a subtle variation from the previous month. Weather in August »Weather in September
September, the first month of the autumn in Onslow, is still a pleasant month, with an average temperature fluctuating between 73°F (22.8°C) and 54.3°F (12.4°C). Onslow's transition into September involves a gentle shift in temperature, receding from a moderately hot 78.6°F (25.9°C) in August to an agreeable 73°F (22.8°C). Weather in September »Weather in October
October, like September, is a moderate autumn month in Onslow, Iowa, with temperature in the range of an average low of 43.2°F (6.2°C) and an average high of 58.6°F (14.8°C). The onset of October brings a distinct decrease in the average high-temperature, receding from an agreeable 73°F (22.8°C) in September to a moderate 58.6°F (14.8°C). Weather in October »Weather in November
November, the last month of the autumn in Onslow, is another chilly month, with temperature in the range of an average low of 31.3°F (-0.4°C) and an average high of 44.6°F (7°C). The start of November involves a temperature drop, moving from a refreshing 58.6°F (14.8°C) in October to a frosty 44.6°F (7°C). Weather in November »Weather in December
The first month of the winter, December, is still a freezing cold month in Onslow, Iowa, with an average temperature fluctuating between 31.8°F (-0.1°C) and 21.4°F (-5.9°C). The onset of December coincides with a reduction in the average high-temperature, falling from a frosty 44.6°F (7°C) in November to a freezing cold 31.8°F (-0.1°C). Weather in December »Updated: Feb 12, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
January, noted for its average high-temperature of 25.2°F (-3.8°C) and an average low-temperature of 13.3°F (-10.4°C), is considered the coldest month.
The months with the highest humidity in Onslow are January and February, with an average relative humidity of 86%.
The months with the least rainfall in Onslow, Iowa, are January and February Rain falls for 5.2 days and accumulates 1.26" (32mm) of rain.
Throughout the year, in Onslow, there are 142.5 rainfall days, and 28.27" (718mm) of precipitation is accumulated.
January through April, October through December are months with snowfall.
January is the month with the most snowfall in Onslow. Snow falls for 12.1 days and accumulates 5.04" (128mm) of snow.
In Onslow, Iowa, during the entire year, snow falls for 43.2 days and aggregates up to 17.17" (436mm) of snow.
January has the least sunshine of the year in Onslow, with an average of 3.8h of sunshine.
The months with the lowest UV index in Onslow, Iowa, are January and December, with an average maximum UV index of 1.
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Onslow, Iowa, 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.
May is the month with the most rainfall in Onslow. Rain falls for 18.6 days and accumulates 4.25" (108mm) of precipitation.
May through September are months without snowfall in Onslow.
With an average of 15h and 12min of daylight, June has the longest days of the year.
The months with the highest UV index are June and July, with an average maximum UV index of 6.
Onslow's warmest month, July, generally records average temperatures ranging from a high of 80.1°F (26.7°C) to a low of 63.3°F (17.4°C).
The months with the most sunshine are July and August, with an average of 9.9h of sunshine.
The least humid month in Onslow, Iowa, is October, with an average relative humidity of 74%.
With an average of 9h and 12min of daylight, December has the shortest days of the year in Onslow, Iowa.
Average temperature
Onslow, IA
The warmest month (with the highest average high temperature) is July (80.1°F).
The month with the lowest average high temperature is January (25.2°F).
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure
Onslow, IA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.94"Hg - Average pressure in June:
29.9"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.09"Hg - Average pressure in December:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed
Onslow, IA
- Average wind speed in January:
10.4mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
7.8mph
- Average wind speed in July:
7mph - Average wind speed in August:
6.9mph - Average wind speed in September:
8mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.3mph - Average wind speed in December:
10mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity
Onslow, IA
The months with the highest relative humidity are January and February (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Onslow, IA
- Average rainfall in January:
1.26" - Average rainfall in February:
1.26" - Average rainfall in March:
1.85" - Average rainfall in April:
3.15" - Average rainfall in May:
4.25" - Average rainfall in June:
3.78"
- Average rainfall in July:
2.83" - Average rainfall in August:
1.77" - Average rainfall in September:
2.52" - Average rainfall in October:
2.52" - Average rainfall in November:
1.65" - Average rainfall in December:
1.42"
The wettest month (with the highest rainfall) is May (4.25").
The driest months (with the least rainfall) are January and February (1.26").
Average rainfall days
Onslow, IA
- Average rainfall days in January:
5.2 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
16 days - Average rainfall days in May:
18.6 days - Average rainfall days in June:
17.3 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
12.5 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
11.9 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
7.7 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (5.2 days).
Average snowfall
Onslow, IA
The month with the highest snowfall is January (5.04").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Onslow, IA
- Average snowfall days in January:
12.1 days - Average snowfall days in February:
9.5 days - Average snowfall days in March:
6 days - Average snowfall days in April:
1.6 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:
0.6 days - Average snowfall days in November:
4 days - Average snowfall days in December:
9.4 days
The month with the highest number of snowfall days is January (12.1 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Onslow, IA
- Average daylight in January:
9h and 30min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 36min - Average daylight in June:
15h and 12min
- Average daylight in July:
14h and 54min - 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 48min - Average daylight in December:
9h and 12min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
3h and 48min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 18min - Average sunshine in April:
7h and 30min - Average sunshine in May:
8h and 24min - Average sunshine in June:
9h and 36min
- Average sunshine in July:
9h and 54min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 6min - Average sunshine in October:
5h and 18min - Average sunshine in November:
5h and 18min - Average sunshine in December:
4h and 12min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Onslow, IA
- Average sunshine days in January:
15.8 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
14.3 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
10.6 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
16.7 days - Average sunshine days in September:
17 days - Average sunshine days in October:
16.9 days - Average sunshine days in November:
16.8 days - Average sunshine days in December:
16.7 days
The month with the most sunshine days is September (17 days).
The month with the least sunshine days is June (10.5 days).
Average UV index
Onslow, IA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Onslow, IA
The month with the most cloud cover is January (Cloud cover 60).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Onslow, IA
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
