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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
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Whittier, Iowa, with an average temperature fluctuating between 13.5°F (-10.3°C) and 25.5°F (-3.6°C). Whittier's coldest weather arrives in January, when temperatures average a high of 25.5°F (-3.6°C) and a low of 13.5°F (-10.3°C). Weather in January »
Weather in February
February, the last month of the winter in Whittier, is also a subzero cold month, with temperature in the range of an average high of 29.8°F (-1.2°C) and an average low of 16.7°F (-8.5°C). February's beginning signals an average high-temperature of a still freezing cold 29.8°F (-1.2°C), barely different from January's 25.5°F (-3.6°C). Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Whittier, Iowa, with an average temperature varying between 30.2°F (-1°C) and 44.6°F (7°C). March signals a clear increase in the average high-temperature, soaring from February's subzero cold 29.8°F (-1.2°C) to a frosty 44.6°F (7°C). Weather in March »
Weather in April
April in Whittier, Iowa, is a refreshing spring month, with an average temperature varying between 40.6°F (4.8°C) and 56.8°F (13.8°C). April's onset brings a rise in the average high-temperature, moving from a chilly 44.6°F (7°C) in March to a refreshing 56.8°F (13.8°C). Weather in April »
Weather in May
May, the last month of the spring in Whittier, is an agreeable month, with an average temperature fluctuating between 68.5°F (20.3°C) and 51.6°F (10.9°C). With the onset of May, Whittier's weather sees a temperature rise, transitioning from a moderate 56.8°F (13.8°C) in April to an agreeable 68.5°F (20.3°C). Weather in May »
Weather in June
June, the first month of the summer in Whittier, is a moderately hot month, with an average temperature varying between 61.3°F (16.3°C) and 77.2°F (25.1°C). The embrace of June brings a minor uplift in the average high-temperature, shifting from an agreeable 68.5°F (20.3°C) in May to a moderately hot 77.2°F (25.1°C). Weather in June »
Weather in July
July, like June, in Whittier, Iowa, is a moderately hot summer month, with temperature in the range of an average low of 64°F (17.8°C) and an average high of 80.1°F (26.7°C). The warmest month is July, with an average high-temperature of 80.1°F (26.7°C) and an average low-temperature of 64°F (17.8°C). Weather in July »
Weather in August
August, the last month of the summer in Whittier, is another warm month, with temperature in the range of an average low of 61.5°F (16.4°C) and an average high of 79.3°F (26.3°C). August's arrival registers an average high-temperature of a still moderately hot 79.3°F (26.3°C), closely aligning with the temperature of the previous month. Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Whittier, Iowa, with an average temperature fluctuating between 54.7°F (12.6°C) and 73.4°F (23°C). The transition to September results in a modest reduction in average high-temperature, moving from 79.3°F (26.3°C) in August to a still warm 73.4°F (23°C). Weather in September »
Weather in October
October, the same as September, in Whittier, Iowa, is a moderate autumn month, with an average temperature varying between 43.7°F (6.5°C) and 59.5°F (15.3°C). As September transitions into October, Whittier sees a drop in the average high-temperature, transitioning from a moderately hot 73.4°F (23°C) to a refreshing 59.5°F (15.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Whittier, Iowa, with an average temperature ranging between max 44.8°F (7.1°C) and min 31.5°F (-0.3°C). As November arrives, a noticeable drop in the average high-temperature is witnessed, moving from a moderate 59.5°F (15.3°C) in October to a chilly 44.8°F (7.1°C). Weather in November »
Weather in December
December, the first month of the winter in Whittier, is still a cold month, with an average temperature varying between 22.1°F (-5.5°C) and 32.4°F (0.2°C). December comes with a drop in the average high-temperature, falling from November's frosty 44.8°F (7.1°C) to a wintry 32.4°F (0.2°C). Weather in December »
Updated: Jun 26, 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?
Whittier reaches its average lowest temperatures in January, measuring 25.5°F (-3.6°C) at the peak and 13.5°F (-10.3°C) at the lowest.
What is the most humid month?
The most humid month is January, with an average relative humidity of 86%.
How many days does it rain?
Throughout the year, there are 137.5 rainfall days, and 27.68" (703mm) of precipitation is accumulated.
When does it snow?
Months with snowfall in Whittier are January through April, October through December.
What is the snowiest month?
The month with the most snowfall is January, when snow falls for 11.3 days and typically aggregates up to 5.16" (131mm) of snow.
How much does it snow?
In Whittier, during the entire year, snow falls for 38.8 days and aggregates up to 15.16" (385mm) of snow.
What is the month with the least sunshine?
The month with the least sunshine is January, with an average of 3.8h of sunshine.
What is the driest month in Whittier?
February is the month with the least rainfall. Rain falls for 5.5 days and accumulates 1.02" (26mm) of precipitation.
When is Daylight Saving Time (DST)?
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 18.2 days and typically aggregates up to 4.45" (113mm) of precipitation.
When it does not snow?
In Whittier, Iowa, snow does not fall in May through September.
When are the longest days?
With an average of 15h and 12min of daylight, June has the longest days of the year.
What part of the year is the hottest in Whittier?
July is the month when Whittier experiences its warmest temperatures, averaging a high of 80.1°F (26.7°C) and a low of 64°F (17.8°C).
What is the month with the most sunshine?
The months with the most sunshine are July and August, with an average of 9.8h of sunshine.
When is the highest UV index?
July is the month with the highest UV index, with an average maximum UV index of 6.
What is the least humid month?
October is the least humid month, with an average relative humidity of 74%.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 12min of daylight.
When is the lowest UV index?
December is the month with the lowest UV index, with an average maximum UV index of 1.
Average temperature
Whittier, 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 (25.5°F).
The month with the highest average low temperature is July (64°F).
The coldest month (with the lowest average low temperature) is January (13.5°F).
Average pressure
Whittier, 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
Whittier, IA
- Average wind speed in January:
10.5mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.8mph - Average wind speed in May:
9.2mph - Average wind speed in June:
7.9mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity
Whittier, IA
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Whittier, IA
- Average rainfall in January:
1.18" - Average rainfall in February:
1.02" - Average rainfall in March:
1.73" - Average rainfall in April:
3.03" - Average rainfall in May:
4.45" - Average rainfall in June:
3.9"
- Average rainfall in July:
2.72" - Average rainfall in August:
1.81" - Average rainfall in September:
2.52" - Average rainfall in October:
2.44" - Average rainfall in November:
1.57" - Average rainfall in December:
1.3"
The wettest month (with the highest rainfall) is May (4.45").
The driest month (with the least rainfall) is February (1.02").
Average rainfall days
Whittier, IA
- Average rainfall days in January:
4.1 days - Average rainfall days in February:
5.5 days - Average rainfall days in March:
10.8 days - Average rainfall days in April:
15.5 days - Average rainfall days in May:
18.2 days - Average rainfall days in June:
16.8 days
- Average rainfall days in July:
15.9 days - Average rainfall days in August:
12.6 days - Average rainfall days in September:
11.4 days - Average rainfall days in October:
11.7 days - Average rainfall days in November:
8.5 days - Average rainfall days in December:
6.5 days
The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (4.1 days).
Average snowfall
Whittier, IA
The month with the highest snowfall is January (5.16").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Whittier, IA
- Average snowfall days in January:
11.3 days - Average snowfall days in February:
8.7 days - Average snowfall days in March:
5.2 days - Average snowfall days in April:
1.3 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:
0.5 days - Average snowfall days in November:
3 days - Average snowfall days in December:
8.7 days
The month with the highest number of snowfall days is January (11.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Whittier, 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 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 1min
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 5min - Average sunshine in February:
4h and 0min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 1min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Whittier, IA
- Average sunshine days in January:
16.5 days - Average sunshine days in February:
16 days - Average sunshine days in March:
15.5 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
10.9 days - Average sunshine days in June:
11.2 days
- Average sunshine days in July:
12.3 days - Average sunshine days in August:
16.3 days - Average sunshine days in September:
17.4 days - Average sunshine days in October:
17.7 days - Average sunshine days in November:
17.6 days - Average sunshine days in December:
18.2 days
The month with the most sunshine days is December (18.2 days).
The month with the least sunshine days is May (10.9 days).
Average UV index
Whittier, IA
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover
Whittier, IA
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Whittier, IA
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).