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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 Princeton, Iowa, is a freezing cold winter month, with temperature in the range of an average high of 26.8°F (-2.9°C) and an average low of 14.4°F (-9.8°C). The coldest period is January, when temperatures fluctuate between an average high of 26.8°F (-2.9°C) and a low of 14.4°F (-9.8°C). Weather in January »
Weather in February
February, the last month of the winter in Princeton, is another freezing cold month, with an average temperature varying between 31.3°F (-0.4°C) and 18.3°F (-7.6°C). The start of February sees the average high-temperature at a still freezing cold 31.3°F (-0.4°C), showing little difference from January's 26.8°F (-2.9°C). Weather in February »
Weather in March
The first month of the spring, March, is a chilly month in Princeton, Iowa, with an average temperature ranging between max 45.9°F (7.7°C) and min 30.9°F (-0.6°C). Princeton in March sees a clear temperature escalation, with average high-temperatures increasing from a subzero cold 31.3°F (-0.4°C) in February to a chilly 45.9°F (7.7°C). Weather in March »
Weather in April
April in Princeton, Iowa, is a mild spring month, with an average temperature fluctuating between 40.8°F (4.9°C) and 57.7°F (14.3°C). With the onset of April, Princeton sees a temperature rise, with the average high-temperature moving from March's chilly 45.9°F (7.7°C) to a moderate 57.7°F (14.3°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Princeton, Iowa, with an average temperature varying between 69.3°F (20.7°C) and 52.5°F (11.4°C). The onset of May brings a rise in the average high-temperature, elevating from a moderate 57.7°F (14.3°C) in April to an agreeable 69.3°F (20.7°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Princeton, Iowa, with an average temperature fluctuating between 61.3°F (16.3°C) and 78.4°F (25.8°C). June brings a rise in the average high-temperature, transitioning from May's pleasant 69.3°F (20.7°C) to a warm 78.4°F (25.8°C). Weather in June »
Weather in July
July, like June, in Princeton, Iowa, is another warm summer month, with an average temperature ranging between max 80.4°F (26.9°C) and min 64.2°F (17.9°C). Princeton's July weather, with an average high temperature of 80.4°F (26.9°C) and an average low temperature of 64.2°F (17.9°C), tends to be the warmest of the year. Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Princeton, Iowa, with an average temperature fluctuating between 80.1°F (26.7°C) and 61.9°F (16.6°C). Princeton observes a minor difference in average high-temperatures between July's 80.4°F (26.9°C) and August's 80.1°F (26.7°C). Weather in August »
Weather in September
September, the first month of the autumn in Princeton, is still a warm month, with an average temperature varying between 74.1°F (23.4°C) and 55°F (12.8°C). The transition to September results in a modest reduction in average high-temperature, moving from a warm 80.1°F (26.7°C) in August to a still moderately hot 74.1°F (23.4°C). Weather in September »
Weather in October
October, the same as September, in Princeton, Iowa, is another mild autumn month, with an average temperature fluctuating between 44.2°F (6.8°C) and 60.4°F (15.8°C). The average high-temperature decreases in October, shifting from a moderately hot 74.1°F (23.4°C) in September to a moderate 60.4°F (15.8°C). Weather in October »
Weather in November
November, the last month of the autumn in Princeton, is also a frosty month, with an average temperature fluctuating between 32.2°F (0.1°C) and 45.7°F (7.6°C). The shift from October to November is characterized by a clear decrease in the average high-temperature, reducing from a moderate 60.4°F (15.8°C) to a frosty 45.7°F (7.6°C). Weather in November »
Weather in December
The first month of the winter, December, is also a wintry month in Princeton, Iowa, with temperature in the range of an average low of 22.6°F (-5.2°C) and an average high of 33.6°F (0.9°C). With the beginning of December, the average high-temperature shows a decrease, transitioning from a frosty 45.7°F (7.6°C) in November to a cold 33.6°F (0.9°C). Weather in December »
Updated: Jul 25, 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 are the coldest months?
In Princeton, January records the average lowest temperatures, peaking at 26.8°F (-2.9°C) and reaching a low of 14.4°F (-9.8°C).
What is the most humid month?
January is the most humid month, with an average relative humidity of 85%.
What is the driest month?
The months with the least rainfall in Princeton are January and February Rain falls for 5.6 days and accumulates 1.34" (34mm) of rain.
How many days does it rain?
Throughout the year, there are 146.6 rainfall days, and 28.86" (733mm) of precipitation is accumulated.
When does it snow?
January through April, October through December are months with snowfall.
What is the snowiest month?
January is the month with the most snowfall. Snow falls for 12.3 days and accumulates 4.8" (122mm) of snow.
How many days does it snow?
In Princeton, during the entire year, snow falls for 40.4 days and aggregates up to 14.72" (374mm) of snow.
What is the month with the least sunshine?
With an average of 4h of sunshine, January has the least sunshine of the year.
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)?
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 days and typically aggregates up to 4.45" (113mm) of precipitation.
When it does not snow?
May through September are months without snowfall.
When are the longest days?
June has the longest days of the year, with an average of 15h and 12min of daylight.
What are the months with the highest UV index?
June and July, with an average maximum UV index of 6, are months with the highest UV index.
What time of the year is the hottest?
In Princeton, July is identified by the average highest temperatures, reaching a peak of 80.4°F (26.9°C) and a low of 64.2°F (17.9°C).
What month has the most sunshine?
The month with the most sunshine is August, with an average of 10h of sunshine.
What is the least humid month?
With an average relative humidity of 73%, October is the least humid month.
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.
Average temperature
Princeton, IA
The warmest month (with the highest average high temperature) is July (80.4°F).
The month with the lowest average high temperature is January (26.8°F).
The month with the highest average low temperature is July (64.2°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).
Average pressure
Princeton, IA
- Average pressure in January:
30.13"Hg - Average pressure in February:
30.11"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:
29.91"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:
30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Princeton, IA
- Average wind speed in January:
10.2mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10mph - Average wind speed in April:
10.4mph - Average wind speed in May:
8.8mph - Average wind speed in June:
7.6mph
- Average wind speed in July:
6.6mph - Average wind speed in August:
6.6mph - Average wind speed in September:
7.6mph - Average wind speed in October:
9.4mph - Average wind speed in November:
10.1mph - Average wind speed in December:
9.7mph
The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity
Princeton, IA
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall
Princeton, IA
- Average rainfall in January:
1.34" - Average rainfall in February:
1.34" - Average rainfall in March:
1.93" - Average rainfall in April:
3.23" - Average rainfall in May:
4.45" - Average rainfall in June:
3.66"
- Average rainfall in July:
2.8" - Average rainfall in August:
1.89" - Average rainfall in September:
2.36" - Average rainfall in October:
2.64" - Average rainfall in November:
1.85" - Average rainfall in December:
1.38"
The wettest month (with the highest rainfall) is May (4.45").
The driest months (with the least rainfall) are January and February (1.34").
Average rainfall days
Princeton, IA
- Average rainfall days in January:
5.6 days - Average rainfall days in February:
5.5 days - Average rainfall days in March:
11.9 days - Average rainfall days in April:
16.5 days - Average rainfall days in May:
18 days - Average rainfall days in June:
17.6 days
- Average rainfall days in July:
16.4 days - Average rainfall days in August:
13.5 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
12.8 days - Average rainfall days in November:
9.5 days - Average rainfall days in December:
7.8 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is February (5.5 days).
Average snowfall
Princeton, IA
The month with the highest snowfall is January (4.8").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Princeton, IA
- Average snowfall days in January:
12.3 days - Average snowfall days in February:
9.7 days - Average snowfall days in March:
4.9 days - Average snowfall days in April:
1.3 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:
0.5 days - Average snowfall days in November:
3.3 days - Average snowfall days in December:
8.4 days
The month with the highest number of snowfall days is January (12.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Princeton, 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 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:
4h - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
9h and 5min - Average sunshine in August:
10h - 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 month with the most sunshine is August (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 4h).
Average sunshine days
Princeton, IA
- Average sunshine days in January:
15.1 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
14.9 days - Average sunshine days in April:
11.3 days - Average sunshine days in May:
10.9 days - Average sunshine days in June:
10.3 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
15.4 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
16.3 days - Average sunshine days in November:
18 days - Average sunshine days in December:
16.5 days
The month with the most sunshine days is November (18 days).
The month with the least sunshine days is June (10.3 days).
Average UV index
Princeton, 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
Princeton, IA
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility
Princeton, 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).
Princeton, Iowa, USA
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