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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, the same as December, in Harvey, Iowa, is another subzero cold winter month, with temperature in the range of an average high of 28°F (-2.2°C) and an average low of 14.9°F (-9.5°C). The lowest temperatures are recorded in January, with averages reaching a high of 28°F (-2.2°C) and a low of 14.9°F (-9.5°C). Weather in January »
Weather in February
February, the last month of the winter in Harvey, is a cold month, with an average temperature fluctuating between 32.4°F (0.2°C) and 18.5°F (-7.5°C). The shift into February reveals an average high-temperature of a cold 32.4°F (0.2°C), closely mirroring January's climate. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Harvey, Iowa, with an average temperature varying between 47.5°F (8.6°C) and 32.4°F (0.2°C). The shift from February to March sees a distinct increase in the average high-temperature, escalating from a wintry 32.4°F (0.2°C) to a chilly 47.5°F (8.6°C). Weather in March »
Weather in April
April in Harvey, Iowa, is a refreshing spring month, with an average temperature varying between 59.5°F (15.3°C) and 42.4°F (5.8°C). Harvey's transition into April is marked by a temperature shift, moving from a frosty 47.5°F (8.6°C) in March to a refreshing 59.5°F (15.3°C). Weather in April »
Weather in May
The last month of the spring, May, is an agreeable month in Harvey, Iowa, with an average temperature fluctuating between 69.8°F (21°C) and 52.9°F (11.6°C). As May arrives, Harvey's weather shows an increase in high-temperatures, moving from April's moderate 59.5°F (15.3°C) to a pleasant 69.8°F (21°C). Weather in May »
Weather in June
June, the first month of the summer in Harvey, is a warm month, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 79.3°F (26.3°C). June's arrival sees a rise in the average high-temperature, jumping from May's pleasant 69.8°F (21°C) to a moderately hot 79.3°F (26.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Harvey, Iowa, with an average temperature ranging between min 65.1°F (18.4°C) and max 82.2°F (27.9°C). In Harvey, Iowa, the highest average temperatures are observed in July, with a high of 82.2°F (27.9°C) and a low of 65.1°F (18.4°C). The heat index in July is estimated at a tropical 89.6°F (32°C). Weather in July »
Weather in August
The last month of the summer, August, is also a moderately hot month in Harvey, Iowa, with an average temperature fluctuating between 81.3°F (27.4°C) and 62.6°F (17°C). Harvey's August reports an average high-temperature of a still warm 81.3°F (27.4°C), exhibiting a minor difference from July. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Harvey, Iowa, with temperature in the range of an average low of 56.1°F (13.4°C) and an average high of 75.7°F (24.3°C). The move into September indicates a slight reduction in the average high-temperature, down from August's warm 81.3°F (27.4°C) to a still moderately hot 75.7°F (24.3°C). Weather in September »
Weather in October
October, like September, in Harvey, Iowa, is another refreshing autumn month, with an average temperature varying between 44.8°F (7.1°C) and 60.8°F (16°C). October's arrival is marked by a notable drop in high-temperatures, falling from a moderately hot 75.7°F (24.3°C) in September to a comfortable 60.8°F (16°C). Weather in October »
Weather in November
November, the last month of the autumn in Harvey, is also a frosty month, with an average temperature ranging between min 32.9°F (0.5°C) and max 47.1°F (8.4°C). With the onset of November, Harvey experiences a modest temperature adjustment, with the average high-temperature receding from a refreshing 60.8°F (16°C) in October to a chilly 47.1°F (8.4°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Harvey, Iowa, with an average temperature varying between 22.8°F (-5.1°C) and 34.5°F (1.4°C). The shift from November to December involves a decrease in the average high-temperature, from a chilly 47.1°F (8.4°C) to a cold 34.5°F (1.4°C). Weather in December »
Updated: Jun 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
What is the coldest month?
Harvey's temperature records reveal January as the coldest month, marked by average highs of 28°F (-2.2°C) and lows of 14.9°F (-9.5°C).
What are the most humid months?
January, February, June and July, with an average relative humidity of 82%, are most humid months.
What is the driest month?
January and February are months with the least rain when the rain falls for 3.8 days and typically aggregates up to 0.43" (11mm) of rain.
How many days does it rain?
In Harvey, during the entire year, the rain falls for 109.6 days and collects up to 12.28" (312mm) of precipitation.
When does it snow?
January through May, October through December are months with snowfall.
When does it snow the most?
January is the month with the most snowfall. Snow falls for 7.9 days and accumulates 1.81" (46mm) of snow.
How much does it snow?
In Harvey, during the entire year, snow falls for 29.7 days and aggregates up to 5.16" (131mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 4.2h of sunshine.
When is the lowest UV index?
January is the month with the lowest UV index, with an average maximum UV index of 1.
When is Daylight Saving Time (DST) in Harvey?
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.
What is the wettest month?
The month with the most rainfall is May, when the rain falls for 14.3 days and typically aggregates up to 2.09" (53mm) of precipitation.
When it does not snow?
June through September are months without snowfall.
When are the longest days?
The month with the longest days is June, with an average of 15h and 6min of daylight.
When is the highest UV index?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What month is the hottest?
July is Harvey's warmest month, registering average high temperatures of 82.2°F (27.9°C) and lows of 65.1°F (18.4°C).
What month has the most sunshine?
With an average of 10.3h of sunshine, July has the most sunshine of the year in Harvey.
What is the least humid month?
The least humid month is October, with an average relative humidity of 71%.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 18min of daylight.
Average temperature
Harvey, IA
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28°F).
The month with the highest average low temperature is July (65.1°F).
The coldest month (with the lowest average low temperature) is January (14.9°F).
Average pressure
Harvey, IA
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"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:
29.97"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 (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Harvey, IA
- Average wind speed in January:
10.3mph - Average wind speed in February:
10.2mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.9mph
- Average wind speed in July:
7mph - Average wind speed in August:
6.9mph - Average wind speed in September:
8mph - Average wind speed in October:
9.3mph - Average wind speed in November:
10.1mph - Average wind speed in December:
9.8mph
The windiest months (with the highest average wind speed) are March and April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.9mph).
Average humidity
Harvey, IA
The months with the highest relative humidity are January, February, June and July (82%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Harvey, IA
- Average rainfall in January:
0.43" - Average rainfall in February:
0.43" - Average rainfall in March:
0.87" - Average rainfall in April:
1.06" - Average rainfall in May:
2.09" - Average rainfall in June:
1.69"
- Average rainfall in July:
1.34" - Average rainfall in August:
1.06" - Average rainfall in September:
1.34" - Average rainfall in October:
0.87" - Average rainfall in November:
0.63" - Average rainfall in December:
0.47"
The wettest month (with the highest rainfall) is May (2.09").
The driest months (with the least rainfall) are January and February (0.43").
Average rainfall days
Harvey, IA
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
3.3 days - Average rainfall days in March:
9.6 days - Average rainfall days in April:
11.5 days - Average rainfall days in May:
14.3 days - Average rainfall days in June:
14 days
- Average rainfall days in July:
12.4 days - Average rainfall days in August:
11.5 days - Average rainfall days in September:
9.6 days - Average rainfall days in October:
8.4 days - Average rainfall days in November:
6.3 days - Average rainfall days in December:
4.9 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is February (3.3 days).
Average snowfall
Harvey, IA
- Average snowfall in January:
1.81" - Average snowfall in February:
1.18" - Average snowfall in March:
0.63" - Average snowfall in April:
0.39" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is January (1.81").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Harvey, IA
- Average snowfall days in January:
7.9 days - Average snowfall days in February:
7.8 days - Average snowfall days in March:
3.7 days - Average snowfall days in April:
1.2 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:
0.5 days - Average snowfall days in November:
1.9 days - Average snowfall days in December:
6.5 days
The month with the highest number of snowfall days is January (7.9 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Harvey, IA
- Average daylight in January:
9h and 4min - 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 3min - Average daylight in June:
15h and 1min
- 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 1min - Average daylight in November:
9h and 5min - Average daylight in December:
9h and 2min
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:
4h and 1min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 2min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 4min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).
Average sunshine days
Harvey, IA
- Average sunshine days in January:
20.6 days - Average sunshine days in February:
18.5 days - Average sunshine days in March:
18 days - Average sunshine days in April:
15.6 days - Average sunshine days in May:
13.8 days - Average sunshine days in June:
12.4 days
- Average sunshine days in July:
13.7 days - Average sunshine days in August:
16.9 days - Average sunshine days in September:
18.1 days - Average sunshine days in October:
20.3 days - Average sunshine days in November:
20.7 days - Average sunshine days in December:
21.9 days
The month with the most sunshine days is December (21.9 days).
The month with the least sunshine days is June (12.4 days).
Average UV index
Harvey, IA
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Harvey, IA
The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility
Harvey, IA
The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).
Harvey, Iowa, USA
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