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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 Preston, Iowa, is another subzero cold winter month, with temperature in the range of an average low of 13.3°F (-10.4°C) and an average high of 25.9°F (-3.4°C). In Preston, the month of January is known for its lowest average temperatures, reaching a high of 25.9°F (-3.4°C) and a low of 13.3°F (-10.4°C). Weather in January »
Weather in February
February, the last month of the winter in Preston, is another freezing cold month, with temperature in the range of an average low of 16.9°F (-8.4°C) and an average high of 29.7°F (-1.3°C). Preston's average high-temperature in February is a still freezing cold 29.7°F (-1.3°C), indicating a subtle variation from January. Weather in February »
Weather in March
The first month of the spring, March, is a frosty month in Preston, Iowa, with an average temperature ranging between max 44.6°F (7°C) and min 29.8°F (-1.2°C). Preston's transition into March is marked by a clear temperature shift, advancing from a freezing cold 29.7°F (-1.3°C) in February to a chilly 44.6°F (7°C). Weather in March »
Weather in April
April in Preston, Iowa, is a refreshing spring month, with an average temperature fluctuating between 40.6°F (4.8°C) and 56.7°F (13.7°C). The arrival of April brings an increase in high-temperatures, moving from a frosty 44.6°F (7°C) in March to a refreshing 56.7°F (13.7°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Preston, Iowa, with an average temperature varying between 51.6°F (10.9°C) and 68.5°F (20.3°C). Preston's transition into May brings a rise in the average high-temperature, moving from a mild 56.7°F (13.7°C) in April to a pleasant 68.5°F (20.3°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Preston, Iowa, with temperature in the range of an average high of 77.2°F (25.1°C) and an average low of 61.2°F (16.2°C). The arrival of June introduces a minor uplift in high-temperatures, adjusting from an agreeable 68.5°F (20.3°C) in May to a warm 77.2°F (25.1°C). Weather in June »
Weather in July
July, like June, in Preston, Iowa, is a moderately hot summer month, with an average temperature varying between 80.2°F (26.8°C) and 63.7°F (17.6°C). With average high temperatures of 80.2°F (26.8°C) and lows of 63.7°F (17.6°C), July is the warmest month. Weather in July »
Weather in August
August, the last month of the summer in Preston, is also a moderately hot month, with temperature in the range of an average low of 61.3°F (16.3°C) and an average high of 79.3°F (26.3°C). Transitioning into August, Preston records an average high-temperature of a still warm 79.3°F (26.3°C), almost identical to July's 80.2°F (26.8°C). Weather in August »
Weather in September
September, the first month of the autumn in Preston, is still a warm month, with temperature in the range of an average high of 73.6°F (23.1°C) and an average low of 54.5°F (12.5°C). Preston's progression into September involves a minor drop in the average high-temperature, slightly receding from a moderately hot 79.3°F (26.3°C) in August to a still warm 73.6°F (23.1°C). Weather in September »
Weather in October
October, like September, is another mild autumn month in Preston, Iowa, with an average temperature fluctuating between 59.5°F (15.3°C) and 43.5°F (6.4°C). Transition into October marks a drop in the average high-temperature, moving from a warm 73.6°F (23.1°C) in September to a moderate 59.5°F (15.3°C). Weather in October »
Weather in November
The last month of the autumn, November, is another chilly month in Preston, Iowa, with an average temperature fluctuating between 45°F (7.2°C) and 31.6°F (-0.2°C). November brings with it a considerable temperature decrease, with average high-temperatures dropping from October's mild 59.5°F (15.3°C) to a frosty 45°F (7.2°C). Weather in November »
Weather in December
The first month of the winter, December, is also an icy month in Preston, Iowa, with an average temperature varying between 32.7°F (0.4°C) and 22.3°F (-5.4°C). Preston's December weather features a mild decline in high-temperatures, reducing from a frosty 45°F (7.2°C) in November to an icy 32.7°F (0.4°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 is the coldest time of year in Preston?
Preston's coldest weather arrives in January, when temperatures average a high of 25.9°F (-3.4°C) and a low of 13.3°F (-10.4°C).
What is the most humid month in Preston?
With an average relative humidity of 86%, January is the most humid month.
What is the driest month in Preston?
January is the month with the least rainfall. Rain falls for 5.4 days and accumulates 1.34" (34mm) of precipitation.
How many days does it rain in Preston?
Throughout the year, there are 143.3 rainfall days, and 29.76" (756mm) of precipitation is accumulated.
When does it snow in Preston?
Months with snowfall in Preston are January through April, October through December.
When does it snow the most in Preston?
January is the month with the most snowfall in Preston. Snow falls for 11 days and accumulates 5.2" (132mm) of snow.
How many days does it snow in Preston?
In Preston, during the entire year, snow falls for 40.2 days and aggregates up to 17.48" (444mm) of snow.
What is the month with the least sunshine in Preston?
The months with the least sunshine are January and February, with an average of 3.9h of sunshine.
When is the lowest UV index in Preston?
January and December, with an average maximum UV index of 1, are months with the lowest UV index in Preston, Iowa.
When is Daylight Saving Time (DST) in Preston?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts in Preston, 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 Preston?
The month with the most rainfall is May, when the rain falls for 18.7 days and typically aggregates up to 4.53" (115mm) of precipitation.
When it does not snow in Preston?
In Preston, Iowa, snow does not fall in May through September.
When are the longest days in Preston?
June has the longest days of the year, with an average of 15h and 12min of daylight.
What time of the year is the hottest in Preston?
Preston's July weather, with an average high temperature of 80.2°F (26.8°C) and an average low temperature of 63.7°F (17.6°C), tends to be the warmest of the year.
What month has the most sunshine in Preston?
With an average of 9.9h of sunshine, July has the most sunshine of the year.
When is the highest UV index in Preston?
With an average maximum UV index of 6, July is the month with the highest UV index in Preston, Iowa.
What is the least humid month in Preston?
With an average relative humidity of 74%, October is the least humid month in Preston.
What is the month with the shortest days in Preston?
The month with the shortest days in Preston, Iowa, is December, with an average of 9h and 12min of daylight.
Average temperature
Preston, IA
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (25.9°F).
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).
Average pressure
Preston, 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:
30.09"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
Preston, IA
- Average wind speed in January:
10.2mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.1mph - Average wind speed in April:
10.5mph - Average wind speed in May:
8.9mph - Average wind speed in June:
7.7mph
- Average wind speed in July:
6.8mph - Average wind speed in August:
6.8mph - Average wind speed in September:
7.8mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.2mph - Average wind speed in December:
9.8mph
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 (6.8mph).
Average humidity
Preston, IA
The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).
Average rainfall
Preston, IA
- Average rainfall in January:
1.34" - Average rainfall in February:
1.38" - Average rainfall in March:
1.93" - Average rainfall in April:
3.46" - Average rainfall in May:
4.53" - Average rainfall in June:
3.86"
The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days
Preston, IA
- Average rainfall days in January:
5.4 days - Average rainfall days in February:
5.3 days - Average rainfall days in March:
11.4 days - Average rainfall days in April:
16.6 days - Average rainfall days in May:
18.7 days - Average rainfall days in June:
17.1 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
11.6 days - Average rainfall days in October:
11.7 days - Average rainfall days in November:
8.4 days - Average rainfall days in December:
6.9 days
The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is February (5.3 days).
Average snowfall
Preston, IA
The month with the highest snowfall is January (5.2").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Preston, IA
- Average snowfall days in January:
11 days - Average snowfall days in February:
9.8 days - Average snowfall days in March:
5.5 days - Average snowfall days in April:
1.7 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:
3.3 days - Average snowfall days in December:
8.3 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Preston, 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:
3h and 5min - 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 3min
- 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 1min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).
Average sunshine days
Preston, IA
- Average sunshine days in January:
16.5 days - Average sunshine days in February:
14.5 days - Average sunshine days in March:
14.8 days - Average sunshine days in April:
11.5 days - Average sunshine days in May:
10.2 days - Average sunshine days in June:
10.4 days
- Average sunshine days in July:
11.1 days - Average sunshine days in August:
15.2 days - Average sunshine days in September:
16.3 days - Average sunshine days in October:
16.9 days - Average sunshine days in November:
18.6 days - Average sunshine days in December:
17.2 days
The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (10.2 days).
Average UV index
Preston, IA
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Preston, IA
The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility
Preston, 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).
Preston, Iowa, USA
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