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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 Plymouth, Iowa, with an average temperature fluctuating between 10°F (-12.2°C) and 22.5°F (-5.3°C). Plymouth's coldest month, January, generally records average temperatures ranging from a high of 22.5°F (-5.3°C) to a low of 10°F (-12.2°C). Weather in January »
Weather in February
The last month of the winter, February, is another freezing cold month in Plymouth, Iowa, with an average temperature ranging between min 13.5°F (-10.3°C) and max 26.6°F (-3°C). As Plymouth steps into February, the average high-temperature holds at a still freezing cold 26.6°F (-3°C), hinting at a minor fluctuation from the prior month. Weather in February »
Weather in March
The first month of the spring, March, is an icy month in Plymouth, Iowa, with an average temperature fluctuating between 27.7°F (-2.4°C) and 41.5°F (5.3°C). March's onset brings a noticeable temperature rise, soaring from a freezing cold 26.6°F (-3°C) in February to an icy 41.5°F (5.3°C). Weather in March »
Weather in April
April is a fresh spring month in Plymouth, Iowa, with temperature in the range of an average high of 54.9°F (12.7°C) and an average low of 39.4°F (4.1°C). In Plymouth, the average high-temperature in April increases from a wintry 41.5°F (5.3°C) in March to a cool 54.9°F (12.7°C). Weather in April »
Weather in May
The last month of the spring, May, is a comfortable month in Plymouth, Iowa, with an average temperature ranging between min 50.5°F (10.3°C) and max 66.9°F (19.4°C). The arrival of May brings a change in Plymouth's weather, with average high-temperatures moving from April's fresh 54.9°F (12.7°C) to a refreshing 66.9°F (19.4°C). Weather in May »
Weather in June
June, the first month of the summer in Plymouth, is a moderately hot month, with an average temperature ranging between max 76.8°F (24.9°C) and min 60.6°F (15.9°C). Plymouth sees an increase in the average high-temperature with the arrival of June, moving from May's comfortable 66.9°F (19.4°C) to a moderately hot 76.8°F (24.9°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Plymouth, Iowa, with an average temperature ranging between min 62.6°F (17°C) and max 79.3°F (26.3°C). July, marked by an average high-temperature of 79.3°F (26.3°C) and a low-temperature of 62.6°F (17°C), is the warmest month. Weather in July »
Weather in August
August, the last month of the summer in Plymouth, is also a moderately hot month, with an average temperature ranging between min 59.9°F (15.5°C) and max 77.5°F (25.3°C). The commencement of August introduces an average high-temperature of a still warm 77.5°F (25.3°C), closely mirroring the preceding month. Weather in August »
Weather in September
The first month of the autumn, September, is also an agreeable month in Plymouth, Iowa, with an average temperature fluctuating between 72.5°F (22.5°C) and 53.4°F (11.9°C). September's advent denotes a minor fluctuation in the average high-temperature to a pleasant 72.5°F (22.5°C) from August's 77.5°F (25.3°C). Weather in September »
Weather in October
October, the same as September, in Plymouth, Iowa, is another refreshing autumn month, with temperature in the range of an average high of 57.6°F (14.2°C) and an average low of 42.6°F (5.9°C). The arrival of October brings a significant change in Plymouth's weather, with average high-temperatures dropping from September's agreeable 72.5°F (22.5°C) to a refreshing 57.6°F (14.2°C). Weather in October »
Weather in November
November, the last month of the autumn in Plymouth, is also a frosty month, with an average temperature ranging between min 30.2°F (-1°C) and max 42.8°F (6°C). With the onset of November, Plymouth's average high-temperature experiences a noticeable drop, receding from October's refreshing 57.6°F (14.2°C) to a chilly 42.8°F (6°C). Weather in November »
Weather in December
The first month of the winter, December, is also a subzero cold month in Plymouth, Iowa, with an average temperature fluctuating between 18°F (-7.8°C) and 28.4°F (-2°C). December's onset brings a clear reduction in the average high-temperature, falling from a chilly 42.8°F (6°C) in November to a freezing cold 28.4°F (-2°C). Weather in December »
Updated: Aug 11, 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 month is the coldest?
Plymouth's coldest weather arrives in January, when temperatures average a high of 22.5°F (-5.3°C) and a low of 10°F (-12.2°C).
What is the most humid month?
With an average relative humidity of 89%, January is the most humid month.
What is the driest month?
The month with the least rainfall is January, when the rain falls for 3.8 days and typically collects 0.94" (24mm) of precipitation.
How many days does it rain?
Throughout the year, there are 129.5 rainfall days, and 25.98" (660mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall.
How many days does it snow in Plymouth?
Throughout the year, there are 50.1 snowfall days, and 21.69" (551mm) of snow is accumulated.
What is the month with the least sunshine?
With an average of 3.6h of sunshine, January has the least sunshine of the year.
What is the month with the lowest UV index?
January and December, with an average maximum UV index of 1, are months with the lowest UV index.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 10.7 days and typically aggregates up to 5.94" (151mm) of snow.
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 rainiest month in Plymouth?
The month with the most rainfall is June, when the rain falls for 17.8 days and typically aggregates up to 3.98" (101mm) 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 18min 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 part of the year is the hottest?
July is Plymouth's warmest month, registering average high temperatures of 79.3°F (26.3°C) and lows of 62.6°F (17°C).
What is the month with the most sunshine?
The months with the most sunshine are July and August, with an average of 9.7h of sunshine.
What is the least humid month?
With an average relative humidity of 71%, 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 0min of daylight.
Average temperature
Plymouth, IA
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.5°F).
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (10°F).
Average pressure
Plymouth, IA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Plymouth, IA
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.3mph - Average wind speed in June:
8.3mph
- Average wind speed in July:
7.2mph - Average wind speed in August:
7.3mph - Average wind speed in September:
8.3mph - Average wind speed in October:
9.9mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.1mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).
Average humidity
Plymouth, IA
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Plymouth, IA
- Average rainfall in January:
0.94" - Average rainfall in February:
1.22" - Average rainfall in March:
1.57" - Average rainfall in April:
2.68" - Average rainfall in May:
3.35" - Average rainfall in June:
3.98"
- Average rainfall in July:
2.48" - Average rainfall in August:
2.36" - Average rainfall in September:
2.52" - Average rainfall in October:
2.24" - Average rainfall in November:
1.3" - Average rainfall in December:
1.34"
The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days
Plymouth, IA
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
3 days - Average rainfall days in March:
9.7 days - Average rainfall days in April:
15 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
14.7 days - Average rainfall days in August:
12.6 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
11.2 days - Average rainfall days in November:
8 days - Average rainfall days in December:
5.5 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3 days).
Average snowfall
Plymouth, IA
The month with the highest snowfall is February (5.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Plymouth, IA
- Average snowfall days in January:
12.7 days - Average snowfall days in February:
10.7 days - Average snowfall days in March:
6.5 days - Average snowfall days in April:
2.4 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:
1.2 days - Average snowfall days in November:
4.6 days - Average snowfall days in December:
11.7 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Plymouth, IA
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 3min - 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 0min
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 0min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
4h and 0min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Plymouth, IA
- Average sunshine days in January:
15.9 days - Average sunshine days in February:
14.9 days - Average sunshine days in March:
15.9 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
12.9 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
16.6 days - Average sunshine days in October:
17.2 days - Average sunshine days in November:
17.7 days - Average sunshine days in December:
16.4 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is June (10.5 days).
Average UV index
Plymouth, IA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Plymouth, IA
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Plymouth, 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).