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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 a freezing cold winter month in Postville, Iowa, with an average temperature fluctuating between 9.9°F (-12.3°C) and 22.5°F (-5.3°C). The lowest temperatures are recorded in January, with averages reaching a high of 22.5°F (-5.3°C) and a low of 9.9°F (-12.3°C). Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Postville, Iowa, with an average temperature varying between 13.1°F (-10.5°C) and 26.2°F (-3.2°C). The transition from January to February sees average high-temperatures adjusting to a still subzero cold 26.2°F (-3.2°C), from a not significantly different 22.5°F (-5.3°C). Weather in February »
Weather in March
The first month of the spring, March, is an icy month in Postville, Iowa, with an average temperature varying between 27°F (-2.8°C) and 41.4°F (5.2°C). The transition from February to March brings a clear temperature rise, with average high-temperatures increasing from a subzero cold 26.2°F (-3.2°C) to a wintry 41.4°F (5.2°C). Weather in March »
Weather in April
April is a cool spring month in Postville, Iowa, with temperature in the range of an average low of 37.9°F (3.3°C) and an average high of 54.3°F (12.4°C). The transition from March to April brings a temperature rise, with average high-temperatures increasing from a wintry 41.4°F (5.2°C) to a fresh 54.3°F (12.4°C). Weather in April »
Weather in May
May, the last month of the spring in Postville, is an enjoyable month, with an average temperature fluctuating between 48.9°F (9.4°C) and 65.8°F (18.8°C). With the onset of May, Postville's average high-temperature sees a rise, moving from April's cool 54.3°F (12.4°C) to an enjoyable 65.8°F (18.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Postville, Iowa, with an average temperature fluctuating between 75.4°F (24.1°C) and 58.6°F (14.8°C). With the onset of June, Postville experiences a temperature shift, with the average high-temperature moving from an enjoyable 65.8°F (18.8°C) in May to a warm 75.4°F (24.1°C). Weather in June »
Weather in July
July, like June, in Postville, Iowa, is another warm summer month, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 79°F (26.1°C). With an average high-temperature of 79°F (26.1°C) and an average low-temperature of 62.2°F (16.8°C), July is the warmest month. Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Postville, Iowa, with an average temperature varying between 59.5°F (15.3°C) and 77.5°F (25.3°C). During August, Postville observes a subtle ascent to a still warm 77.5°F (25.3°C) from July's 79°F (26.1°C) in the average high-temperature. Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Postville, Iowa, with an average temperature varying between 71.1°F (21.7°C) and 52.3°F (11.3°C). The move into September indicates a slight reduction in the average high-temperature, down from August's moderately hot 77.5°F (25.3°C) to an agreeable 71.1°F (21.7°C). Weather in September »
Weather in October
October, the same as September, in Postville, Iowa, is another mild autumn month, with an average temperature varying between 41.4°F (5.2°C) and 57°F (13.9°C). During the transition into October, Postville observes a decrease in the average high-temperature, falling from an agreeable 71.1°F (21.7°C) in September to a refreshing 57°F (13.9°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cold month in Postville, Iowa, with an average temperature varying between 42.6°F (5.9°C) and 29.5°F (-1.4°C). In November, the meteorological conditions markedly change with the average high-temperature descending from a moderate 57°F (13.9°C) in October to a wintry 42.6°F (5.9°C). Weather in November »
Weather in December
December, the first month of the winter in Postville, is still a freezing cold month, with an average temperature ranging between max 28.9°F (-1.7°C) and min 18.7°F (-7.4°C). December comes with a decrease in the average high-temperature, falling from a wintry 42.6°F (5.9°C) in November to a freezing cold 28.9°F (-1.7°C). Weather in December »
Updated: Feb 12, 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 time of the year is the coldest in Postville?
Postville's January weather reaches an average high of 22.5°F (-5.3°C) and an average low of 9.9°F (-12.3°C), making it the coldest month.
What is the most humid month in Postville?
January is the most humid month, with an average relative humidity of 89%.
What is the driest month in Postville?
January is the month with the least rainfall in Postville, Iowa. Rain falls for 4 days and accumulates 0.98" (25mm) of precipitation.
How many days does it rain in Postville?
Throughout the year, in Postville, there are 131 rainfall days, and 27.91" (709mm) of precipitation is accumulated.
When does it snow in Postville?
January through May, October through December are months with snowfall.
How many days does it snow in Postville?
In Postville, during the entire year, snow falls for 52.3 days and aggregates up to 21.26" (540mm) of snow.
What is the month with the least sunshine in Postville?
The month with the least sunshine is January, with an average of 3.5h of sunshine.
What are the months with the lowest UV index in Postville?
The months with the lowest UV index in Postville, Iowa, are January, November and December, with an average maximum UV index of 1.
When does it snow the most in Postville?
February is the month with the most snowfall. Snow falls for 10.3 days and accumulates 5.16" (131mm) of snow.
When is Daylight Saving Time (DST) in Postville?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Postville, 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.
What is the wettest month in Postville?
The month with the most rainfall is June, when the rain falls for 17.7 days and typically aggregates up to 4.33" (110mm) of precipitation.
When it does not snow in Postville?
June through September are months without snowfall.
When are the longest days in Postville?
The month with the longest days in Postville, Iowa, is June, with an average of 15h and 18min of daylight.
What month is the hottest in Postville?
Postville witnesses the warmest weather in July, with temperatures averaging a high of 79°F (26.1°C) and a low of 62.2°F (16.8°C).
When is the highest UV index in Postville?
July is the month with the highest UV index in Postville, Iowa, with an average maximum UV index of 6.
What month has the most sunshine in Postville?
With an average of 9.8h of sunshine, August has the most sunshine of the year.
What is the least humid month in Postville?
With an average relative humidity of 75%, October is the least humid month.
What is the month with the shortest days in Postville?
December has the shortest days of the year, with an average of 9h and 6min of daylight.
Average temperature
Postville, IA
The warmest month (with the highest average high temperature) is July (79°F).
The month with the lowest average high temperature is January (22.5°F).
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (9.9°F).
Average pressure
Postville, 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:
29.94"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:
29.99"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 (29.89"Hg).
Average wind speed
Postville, IA
- Average wind speed in January:
10.2mph - Average wind speed in February:
10.1mph - Average wind speed in March:
10mph - Average wind speed in April:
10.5mph - Average wind speed in May:
9mph - Average wind speed in June:
7.9mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity
Postville, IA
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (75%).
Average rainfall
Postville, IA
- Average rainfall in January:
0.98" - Average rainfall in February:
1.14" - Average rainfall in March:
1.69" - Average rainfall in April:
3.19" - Average rainfall in May:
3.78" - Average rainfall in June:
4.33"
- Average rainfall in July:
2.91" - Average rainfall in August:
2.01" - Average rainfall in September:
2.44" - Average rainfall in October:
2.52" - Average rainfall in November:
1.5" - Average rainfall in December:
1.42"
The wettest month (with the highest rainfall) is June (4.33").
The driest month (with the least rainfall) is January (0.98").
Average rainfall days
Postville, IA
- Average rainfall days in January:
4 days - Average rainfall days in February:
3.8 days - Average rainfall days in March:
10.1 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
17.7 days
- Average rainfall days in July:
14.6 days - Average rainfall days in August:
12.3 days - Average rainfall days in September:
10.7 days - Average rainfall days in October:
11.6 days - Average rainfall days in November:
8.2 days - Average rainfall days in December:
5.4 days
The month with the highest number of rainy days is June (17.7 days).
The month with the least rainy days is February (3.8 days).
Average snowfall
Postville, IA
The month with the highest snowfall is February (5.16").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Postville, IA
- Average snowfall days in January:
13.3 days - Average snowfall days in February:
10.3 days - Average snowfall days in March:
7 days - Average snowfall days in April:
3 days - Average snowfall days in May:
0.3 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:
1.4 days - Average snowfall days in November:
5.1 days - Average snowfall days in December:
11.9 days
The month with the highest number of snowfall days is January (13.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Postville, IA
- Average daylight in January:
9h and 2min - 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:
15h and 0min - 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 4min - 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:
5h and 4min - Average sunshine in April:
7h and 2min - Average sunshine in May:
8h and 1min - Average sunshine in June:
9h and 1min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 5min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 1min - Average sunshine in November:
5h and 0min - Average sunshine in December:
4h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 30min).
Average sunshine days
Postville, IA
- Average sunshine days in January:
15.3 days - Average sunshine days in February:
15.3 days - Average sunshine days in March:
15.4 days - Average sunshine days in April:
11.5 days - Average sunshine days in May:
12.3 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
12.8 days - Average sunshine days in August:
16.4 days - Average sunshine days in September:
17 days - Average sunshine days in October:
16.6 days - Average sunshine days in November:
16.9 days - Average sunshine days in December:
16.8 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
Postville, IA
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover
Postville, IA
The month with the most cloud cover is January (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Postville, 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).