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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 Guernsey, Iowa, is another subzero cold winter month, with an average temperature fluctuating between 27.1°F (-2.7°C) and 14.7°F (-9.6°C). January, with its high-temperature average of 27.1°F (-2.7°C) and a low-temperature average of 14.7°F (-9.6°C), is the coldest month. Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Guernsey, Iowa, with an average temperature varying between 31.5°F (-0.3°C) and 17.8°F (-7.9°C). February's presence marks an average high-temperature of a still subzero cold 31.5°F (-0.3°C), subtly varied from January's 27.1°F (-2.7°C). Weather in February »
Weather in March
March, the first month of the spring in Guernsey, is a frosty month, with an average temperature varying between 46°F (7.8°C) and 31.6°F (-0.2°C). The beginning of March signals a clear escalation in the average high-temperature, soaring from a freezing cold 31.5°F (-0.3°C) in February to a chilly 46°F (7.8°C). Weather in March »
Weather in April
April in Guernsey, Iowa, is a mild spring month, with an average temperature fluctuating between 41.9°F (5.5°C) and 58.6°F (14.8°C). A shift in the average high-temperature is noticeable in April, changing from a chilly 46°F (7.8°C) in March to a mild 58.6°F (14.8°C). Weather in April »
Weather in May
May, the last month of the spring in Guernsey, is an agreeable month, with an average temperature ranging between max 69.3°F (20.7°C) and min 52.3°F (11.3°C). May's arrival signals an increase in average high-temperatures, moving from April's refreshing 58.6°F (14.8°C) to an agreeable 69.3°F (20.7°C). Weather in May »
Weather in June
June, the first month of the summer in Guernsey, is a moderately hot month, with temperature in the range of an average low of 62.2°F (16.8°C) and an average high of 78.6°F (25.9°C). The average high-temperature increases in June, moving from an agreeable 69.3°F (20.7°C) in May to a moderately hot 78.6°F (25.9°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Guernsey, Iowa, with an average temperature fluctuating between 81.1°F (27.3°C) and 64.8°F (18.2°C). The month of July, characterized by an average high of 81.1°F (27.3°C) and a low of 64.8°F (18.2°C), is recognized as the warmest. July's average heat index is computed to be a tropical 87.8°F (31°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Guernsey, Iowa, with an average temperature varying between 62.2°F (16.8°C) and 80.4°F (26.9°C). August's onset records an average high-temperature of a still moderately hot 80.4°F (26.9°C), a near match to July's 81.1°F (27.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a warm month in Guernsey, Iowa, with an average temperature ranging between max 74.7°F (23.7°C) and min 55.6°F (13.1°C). With the onset of September, Guernsey's climate undergoes a slight change as the average high-temperature moves from 80.4°F (26.9°C) in August to a still warm 74.7°F (23.7°C). Weather in September »
Weather in October
October, the same as September, in Guernsey, Iowa, is another mild autumn month, with temperature in the range of an average low of 44.4°F (6.9°C) and an average high of 60.1°F (15.6°C). As Guernsey welcomes October, the average high-temperature witnesses a distinct drop, moving from a warm 74.7°F (23.7°C) in September to a mild 60.1°F (15.6°C). Weather in October »
Weather in November
November, the last month of the autumn in Guernsey, is also a frosty month, with temperature in the range of an average low of 32.5°F (0.3°C) and an average high of 46.8°F (8.2°C). Onset of November witnesses a reduction in the average high-temperature, falling from a moderate 60.1°F (15.6°C) in October to a chilly 46.8°F (8.2°C). Weather in November »
Weather in December
December, the first month of the winter in Guernsey, is also a wintry month, with an average temperature varying between 33.6°F (0.9°C) and 22.3°F (-5.4°C). The commencement of December indicates a shift in the average high-temperature, receding from November's frosty 46.8°F (8.2°C) to a wintry 33.6°F (0.9°C). Weather in December »
Updated: Aug 18, 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?
Guernsey experiences its average lowest temperatures in January, reaching a peak of 27.1°F (-2.7°C) and a minimum of 14.7°F (-9.6°C).
What are the most humid months?
The months with the highest humidity are January and July, with an average relative humidity of 84%.
What is the driest month?
January is the month with the least rainfall. Rain falls for 5.2 days and accumulates 1.18" (30mm) of precipitation.
How many days does it rain?
In Guernsey, Iowa, during the entire year, the rain falls for 145.5 days and collects up to 30.39" (772mm) of precipitation.
When does it snow?
Months with snowfall are January through May, October through December.
How many days does it snow?
In Guernsey, during the entire year, snow falls for 39 days and aggregates up to 16.65" (423mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 4.1h of sunshine.
When is the lowest UV index in Guernsey?
The month with the lowest UV index is January, with an average maximum UV index of 1.
What is the snowiest month?
The month with the most snowfall is February, when snow falls for 9.8 days and typically aggregates up to 5.24" (133mm) 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 wettest month?
May is the month with the most rainfall in Guernsey. Rain falls for 18.8 days and accumulates 4.57" (116mm) of precipitation.
When it does not snow?
In Guernsey, snow does not fall in June through September.
When are the longest days?
The month with the longest days is June, with an average of 15h and 6min 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 month is the hottest?
The temperatures reach their highest averages in July, with highs of 81.1°F (27.3°C) and lows of 64.8°F (18.2°C).
What month has the most sunshine?
The month with the most sunshine is July, with an average of 10.1h of sunshine.
What is the least humid month?
October is the least humid month, with an average relative humidity of 72%.
What is the month with the shortest days?
December has the shortest days of the year in Guernsey, with an average of 9h and 12min of daylight.
Average temperature
Guernsey, IA
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27.1°F).
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14.7°F).
Average pressure
Guernsey, IA
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.13"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"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:
29.97"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:
30.11"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed
Guernsey, IA
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.5mph - Average wind speed in March:
10.5mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.1mph - Average wind speed in June:
8mph
- Average wind speed in July:
7mph - Average wind speed in August:
7mph - Average wind speed in September:
8mph - Average wind speed in October:
9.7mph - Average wind speed in November:
10.4mph - Average wind speed in December:
10.1mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity
Guernsey, IA
The months with the highest relative humidity are January and July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall
Guernsey, IA
- Average rainfall in January:
1.18" - Average rainfall in February:
1.3" - Average rainfall in March:
2.09" - Average rainfall in April:
3.15" - Average rainfall in May:
4.57" - Average rainfall in June:
4.41"
- Average rainfall in July:
3.11" - Average rainfall in August:
2.52" - Average rainfall in September:
2.8" - Average rainfall in October:
2.24" - Average rainfall in November:
1.57" - Average rainfall in December:
1.46"
The wettest month (with the highest rainfall) is May (4.57").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days
Guernsey, IA
- Average rainfall days in January:
5.2 days - Average rainfall days in February:
5 days - Average rainfall days in March:
11.7 days - Average rainfall days in April:
15.3 days - Average rainfall days in May:
18.8 days - Average rainfall days in June:
18.9 days
- Average rainfall days in July:
16.8 days - Average rainfall days in August:
13.8 days - Average rainfall days in September:
12.8 days - Average rainfall days in October:
11.3 days - Average rainfall days in November:
8.6 days - Average rainfall days in December:
7.3 days
The month with the highest number of rainy days is June (18.9 days).
The month with the least rainy days is February (5 days).
Average snowfall
Guernsey, IA
- Average snowfall in January:
4.96" - Average snowfall in February:
5.24" - Average snowfall in March:
2.09" - Average snowfall in April:
0.79" - Average snowfall in May:
0.12" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Guernsey, IA
- Average snowfall days in January:
10.6 days - Average snowfall days in February:
9.8 days - Average snowfall days in March:
6 days - Average snowfall days in April:
1.7 days - Average snowfall days in May:
0.2 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:
2.6 days - Average snowfall days in December:
7.5 days
The month with the highest number of snowfall days is January (10.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Guernsey, 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 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in January:
4h and 1min - Average sunshine in February:
4h and 2min - Average sunshine in March:
6h and 2min - Average sunshine in April:
7h and 5min - Average sunshine in May:
8h and 4min - Average sunshine in June:
9h and 4min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 0min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 3min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).
Average sunshine days
Guernsey, IA
- Average sunshine days in January:
16.8 days - Average sunshine days in February:
14.3 days - Average sunshine days in March:
14.7 days - Average sunshine days in April:
11.5 days - Average sunshine days in May:
9.6 days - Average sunshine days in June:
8.3 days
- Average sunshine days in July:
9.8 days - Average sunshine days in August:
13.4 days - Average sunshine days in September:
15.7 days - Average sunshine days in October:
17.9 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
18.1 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is June (8.3 days).
Average UV index
Guernsey, 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
Guernsey, IA
The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).
Average visibility
Guernsey, 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).
Guernsey, Iowa, USA
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