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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Weather in January
January, like December, is a freezing cold winter month in O'Neill, Iowa, with an average temperature fluctuating between 24.3°F (-4.3°C) and 11.7°F (-11.3°C). In O'Neill, Iowa, the month of January registers the lowest temperatures, averaging 24.3°F (-4.3°C) at the peak and 11.7°F (-11.3°C) at the lowest. Weather in January »
Weather in February
February, the last month of the winter in O'Neill, is also a subzero cold month, with an average temperature varying between 28.2°F (-2.1°C) and 14.5°F (-9.7°C). The average high-temperature in February, at a still subzero cold 28.2°F (-2.1°C), reveals a modest deviation from January's 24.3°F (-4.3°C). Weather in February »
Weather in March
March, the first month of the spring in O'Neill, is a frosty month, with an average temperature ranging between max 42.8°F (6°C) and min 28.2°F (-2.1°C). With the onset of March, O'Neill's average high-temperature witnesses a clear rise, advancing from February's subzero cold 28.2°F (-2.1°C) to a chilly 42.8°F (6°C). Weather in March »
Weather in April
April is a fresh spring month in O'Neill, Iowa, with an average temperature ranging between min 38.7°F (3.7°C) and max 55°F (12.8°C). Observing a rise in April, the average high-temperature goes from March's frosty 42.8°F (6°C) to a cool 55°F (12.8°C). Weather in April »
Weather in May
May, the last month of the spring in O'Neill, is an enjoyable month, with an average temperature varying between 66.7°F (19.3°C) and 50°F (10°C). O'Neill's May weather brings a rise in high-temperatures, moving from a fresh 55°F (12.8°C) in April to an enjoyable 66.7°F (19.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in O'Neill, Iowa, with an average temperature ranging between max 76.3°F (24.6°C) and min 59.5°F (15.3°C). As June sets, the average high-temperature shows an increase, moving up from a refreshing 66.7°F (19.3°C) in May to a moderately hot 76.3°F (24.6°C). Weather in June »
Weather in July
July, like June, in O'Neill, Iowa, is another warm summer month, with an average temperature varying between 62.8°F (17.1°C) and 79.7°F (26.5°C). The warmest period tends to be July, when average temperatures fluctuate between a high of 79.7°F (26.5°C) and a low of 62.8°F (17.1°C). Weather in July »
Weather in August
August, the last month of the summer in O'Neill, is another warm month, with an average temperature fluctuating between 78.4°F (25.8°C) and 60.1°F (15.6°C). O'Neill's August reports an average high-temperature of a still warm 78.4°F (25.8°C), exhibiting a minor difference from July. Weather in August »
Weather in September
September, the first month of the autumn in O'Neill, is still a pleasant month, with temperature in the range of an average high of 72°F (22.2°C) and an average low of 53.2°F (11.8°C). In O'Neill, the average high-temperature in September slightly decreases from a warm 78.4°F (25.8°C) in August to a pleasant 72°F (22.2°C). Weather in September »
Weather in October
October, the same as September, in O'Neill, Iowa, is another mild autumn month, with an average temperature ranging between max 57.7°F (14.3°C) and min 41.5°F (5.3°C). The arrival of October corresponds with a shift in temperature, down from an agreeable 72°F (22.2°C) in September to a refreshing 57.7°F (14.3°C). Weather in October »
Weather in November
November, the last month of the autumn in O'Neill, is another chilly month, with an average temperature fluctuating between 30.2°F (-1°C) and 43.7°F (6.5°C). O'Neill observes a minor decrease in the average high-temperature with the arrival of November, falling from October's refreshing 57.7°F (14.3°C) to a chilly 43.7°F (6.5°C). Weather in November »
Weather in December
The first month of the winter, December, is also a subzero cold month in O'Neill, Iowa, with an average temperature fluctuating between 31.3°F (-0.4°C) and 21°F (-6.1°C). As O'Neill enters December, the average high-temperature decreases from the a frosty 43.7°F (6.5°C) of November to a freezing cold 31.3°F (-0.4°C). Weather in December »
[Resources]Frequently asked questions
What time of the year is the coldest in O'Neill?
January, with its high-temperature average of 24.3°F (-4.3°C) and a low-temperature average of 11.7°F (-11.3°C), is the coldest month in O'Neill.
What is the most humid month in O'Neill?
January is the most humid month in O'Neill, Iowa, with an average relative humidity of 88%.
How many days does it rain in O'Neill?
In O'Neill, Iowa, during the entire year, the rain falls for 139.6 days and collects up to 24.92" (633mm) of precipitation.
When does it snow in O'Neill?
January through April, October through December are months with snowfall in O'Neill.
When does it snow the most in O'Neill?
The month with the most snowfall is January, when snow falls for 13.7 days and typically aggregates up to 4.29" (109mm) of snow.
How much does it snow in O'Neill?
In O'Neill, Iowa, during the entire year, snow falls for 52.1 days and aggregates up to 16.54" (420mm) of snow.
What is the month with the least sunshine in O'Neill?
With an average of 3.5h of sunshine, January has the least sunshine of the year.
When is the lowest UV index in O'Neill?
The months with the lowest UV index in O'Neill, Iowa, are January, November and December, with an average maximum UV index of 1.
When is Daylight Saving Time (DST) in O'Neill?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in O'Neill, 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.
What is the wettest month in O'Neill?
The months with the most rainfall are May and June, with an average 3.54" (90mm) of precipitation.
When it does not snow in O'Neill?
In O'Neill, Iowa, snow does not fall in May through September.
What are the months with the highest UV index in O'Neill?
May through August, with an average maximum UV index of 5, are months with the highest UV index.
When are the longest days in O'Neill?
With an average of 15h and 18min of daylight, June has the longest days of the year in O'Neill.
What month is the hottest in O'Neill?
O'Neill's warmest month, July, registers temperatures that range from a high of 79.7°F (26.5°C) to a low of 62.8°F (17.1°C).
What month has the most sunshine in O'Neill?
July has the most sunshine of the year, with an average of 9.9h of sunshine.
What is the least humid month in O'Neill?
The least humid month in O'Neill, Iowa, is October, with an average relative humidity of 75%.
What is the driest month in O'Neill?
The month with the least rainfall in O'Neill is December, when the rain falls for 5.9 days and typically collects 0.98" (25mm) of precipitation.
What is the month with the shortest days in O'Neill?
December has the shortest days of the year in O'Neill, Iowa, with an average of 9h and 6min of daylight.
Average temperature
O'Neill, IA
The warmest month (with the highest average high temperature) is July (79.7°F).
The month with the lowest average high temperature is January (24.3°F).
The month with the highest average low temperature is July (62.8°F).
The coldest month (with the lowest average low temperature) is January (11.7°F).
Average pressure
O'Neill, 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:
29.94"Hg - Average pressure in May:
29.95"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:
30.08"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
O'Neill, IA
- Average wind speed in January:
10.1mph - Average wind speed in February:
10mph - Average wind speed in March:
9.9mph - Average wind speed in April:
10.3mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.9mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.1mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).
Average humidity
O'Neill, IA
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (75%).
Average rainfall
O'Neill, IA
- Average rainfall in January:
1.02" - Average rainfall in February:
1.02" - Average rainfall in March:
1.46" - Average rainfall in April:
2.44" - Average rainfall in May:
3.54" - Average rainfall in June:
3.54"
- Average rainfall in July:
3.23" - Average rainfall in August:
1.97" - Average rainfall in September:
2.56" - Average rainfall in October:
1.89" - Average rainfall in November:
1.26" - Average rainfall in December:
0.98"
The wettest months (with the highest rainfall) are May and June (3.54").
The driest month (with the least rainfall) is December (0.98").
Average rainfall days
O'Neill, IA
- Average rainfall days in January:
4.5 days - Average rainfall days in February:
4.1 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
18.3 days - Average rainfall days in June:
18.1 days
- Average rainfall days in July:
17 days - Average rainfall days in August:
13.9 days - Average rainfall days in September:
12.5 days - Average rainfall days in October:
10.9 days - Average rainfall days in November:
8.1 days - Average rainfall days in December:
5.9 days
The month with the highest number of rainy days is May (18.3 days).
The month with the least rainy days is February (4.1 days).
Average snowfall
O'Neill, IA
The month with the highest snowfall is January (4.29").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
O'Neill, IA
- Average snowfall days in January:
13.7 days - Average snowfall days in February:
11.9 days - Average snowfall days in March:
7.2 days - Average snowfall days in April:
2.6 days - Average snowfall days in May:
0.1 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:
4.3 days - Average snowfall days in December:
11 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
O'Neill, IA
- Average daylight in January:
9h and 3min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
14h and 5min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
3h and 3min - Average sunshine in February:
3h and 4min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 1min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 2min - Average sunshine in November:
4h and 5min - Average sunshine in December:
3h and 5min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
O'Neill, IA
- Average sunshine days in January:
14.7 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
14.1 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
9.4 days - Average sunshine days in June:
9.7 days
- Average sunshine days in July:
10.7 days - Average sunshine days in August:
15.1 days - Average sunshine days in September:
15.1 days - Average sunshine days in October:
17.1 days - Average sunshine days in November:
17.9 days - Average sunshine days in December:
17.1 days
The month with the most sunshine days is November (17.9 days).
The month with the least sunshine days is May (9.4 days).
Average UV index
O'Neill, IA
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover
O'Neill, IA
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
O'Neill, IA
The months with the highest visibility are March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February and July (5mi).
O'Neill, Iowa, USA
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