Expand
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 Coster, Iowa, is a freezing cold winter month, with an average temperature fluctuating between 24.1°F (-4.4°C) and 11.8°F (-11.2°C). January brings the lowest temperatures, with an average high of 24.1°F (-4.4°C) and an average low of 11.8°F (-11.2°C). Weather in January »
Weather in February
February, the last month of the winter in Coster, is also a subzero cold month, with an average temperature varying between 15.1°F (-9.4°C) and 28.2°F (-2.1°C). The transition from January to February sees an average high-temperature of a still subzero cold 28.2°F (-2.1°C), indicating a minor variance from the prior month. Weather in February »
Weather in March
March, the first month of the spring in Coster, is a frosty month, with an average temperature ranging between max 43.3°F (6.3°C) and min 29.5°F (-1.4°C). Coster, Iowa, witnesses a significant increase in the average high-temperature with the arrival of March, rising from February's subzero cold 28.2°F (-2.1°C) to a frosty 43.3°F (6.3°C). Weather in March »
Weather in April
April is a moderate spring month in Coster, Iowa, with an average temperature ranging between min 39.9°F (4.4°C) and max 56.3°F (13.5°C). With the onset of April, Coster sees a temperature rise, with the average high-temperature moving from March's frosty 43.3°F (6.3°C) to a moderate 56.3°F (13.5°C). Weather in April »
Weather in May
The last month of the spring, May, is a pleasant month in Coster, Iowa, with an average temperature fluctuating between 68.2°F (20.1°C) and 51.8°F (11°C). May brings a rise in Coster's average high-temperature, moving from a refreshing 56.3°F (13.5°C) in April to an agreeable 68.2°F (20.1°C). Weather in May »
Weather in June
June, the first month of the summer in Coster, is a warm month, with an average temperature fluctuating between 77.5°F (25.3°C) and 61.3°F (16.3°C). The commencement of June sees a shift in the average high-temperature, moving from an agreeable 68.2°F (20.1°C) in May to a warm 77.5°F (25.3°C). Weather in June »
Weather in July
July, the same as June, is another warm summer month in Coster, Iowa, with an average temperature ranging between min 63.3°F (17.4°C) and max 79.9°F (26.6°C). July proves to be the warmest month, recording an average peak temperature of 79.9°F (26.6°C) and a minimum temperature of 63.3°F (17.4°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Coster, Iowa, with an average temperature ranging between min 60.6°F (15.9°C) and max 78.4°F (25.8°C). With the transition into August, Coster notes an average high-temperature of a still warm 78.4°F (25.8°C), closely resembling July. Weather in August »
Weather in September
September, the first month of the autumn in Coster, is also an agreeable month, with an average temperature fluctuating between 54.3°F (12.4°C) and 73.2°F (22.9°C). In September, Coster experiences a minor shift in meteorological conditions with average high-temperatures marked at a pleasant 73.2°F (22.9°C), closely mirroring the climate in August. Weather in September »
Weather in October
October, the same as September, in Coster, Iowa, is a moderate autumn month, with an average temperature ranging between max 58.3°F (14.6°C) and min 43.2°F (6.2°C). The arrival of October brings a significant change in Coster's weather, with average high-temperatures dropping from September's pleasant 73.2°F (22.9°C) to a refreshing 58.3°F (14.6°C). Weather in October »
Weather in November
November, the last month of the autumn in Coster, is another chilly month, with an average temperature varying between 43.9°F (6.6°C) and 31.1°F (-0.5°C). Coster's transition into November is marked by a distinct drop in the average high-temperature, reducing from a mild 58.3°F (14.6°C) in October to a chilly 43.9°F (6.6°C). Weather in November »
Weather in December
December, the first month of the winter in Coster, is also a subzero cold month, with an average temperature ranging between min 19.9°F (-6.7°C) and max 30.6°F (-0.8°C). Welcoming December, Coster observes a shift in the average high-temperature, falling from November's frosty 43.9°F (6.6°C) to a subzero cold 30.6°F (-0.8°C). Weather in December »
[Resources]Frequently asked questions
What is the coldest month in Coster?
In Coster, the average lowest temperatures are observed in January, with a high of 24.1°F (-4.4°C) and a low of 11.8°F (-11.2°C).
What is the most humid month in Coster?
The most humid month in Coster, Iowa, is January, with an average relative humidity of 87%.
What is the driest month in Coster?
The month with the least rainfall in Coster is January, when the rain falls for 5.1 days and typically collects 1.14" (29mm) of precipitation.
How many days does it rain in Coster?
Throughout the year, there are 148.3 rainfall days, and 31.02" (788mm) of precipitation is accumulated.
When does it snow in Coster?
Months with snowfall are January through May, October through December.
How many days does it snow in Coster?
Throughout the year, in Coster, Iowa, there are 53.2 snowfall days, and 22.4" (569mm) of snow is accumulated.
What is the month with the least sunshine in Coster?
The month with the least sunshine in Coster is January, with an average of 3.8h of sunshine.
What is the month with the lowest UV index in Coster?
The month with the lowest UV index in Coster, Iowa, is January, with an average maximum UV index of 1.
When does it snow the most in Coster?
February is the month with the most snowfall in Coster. Snow falls for 11.8 days and accumulates 5.51" (140mm) of snow.
When is Daylight Saving Time (DST) in Coster?
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 in Coster?
June is the month with the most rainfall in Coster, Iowa. Rain falls for 20.1 days and accumulates 4.76" (121mm) of precipitation.
When it does not snow in Coster?
In Coster, Iowa, snow does not fall in June through September.
When are the longest days in Coster?
With an average of 15h and 18min of daylight, June has the longest days of the year.
What is the month with the highest UV index in Coster?
The month with the highest UV index in Coster is June, with an average maximum UV index of 6.
What month is the hottest in Coster?
July, with its average high-temperature of 79.9°F (26.6°C) and an average low-temperature of 63.3°F (17.4°C), holds the record as the warmest month in Coster.
What month has the most sunshine in Coster?
The month with the most sunshine is July, with an average of 9.9h of sunshine.
What is the least humid month in Coster?
The least humid month is October, with an average relative humidity of 71%.
What is the month with the shortest days in Coster?
December has the shortest days of the year in Coster, Iowa, with an average of 9h and 6min of daylight.
Average temperature
Coster, IA
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (24.1°F).
The month with the highest average low temperature is July (63.3°F).
The coldest month (with the lowest average low temperature) is January (11.8°F).
Average pressure
Coster, 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:
29.89"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:
30"Hg - Average pressure in November:
30.08"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 (29.89"Hg).
Average wind speed
Coster, 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:
10.8mph - Average wind speed in May:
9.3mph - Average wind speed in June:
8.3mph
- Average wind speed in July:
7.1mph - Average wind speed in August:
7.1mph - Average wind speed in September:
8.3mph - Average wind speed in October:
9.9mph - Average wind speed in November:
10.5mph - Average wind speed in December:
10.3mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7.1mph).
Average humidity
Coster, IA
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Coster, IA
- Average rainfall in January:
1.14" - Average rainfall in February:
1.3" - Average rainfall in March:
1.85" - Average rainfall in April:
3.43" - Average rainfall in May:
4.69" - Average rainfall in June:
4.76"
- Average rainfall in July:
3.07" - Average rainfall in August:
2.44" - Average rainfall in September:
2.56" - Average rainfall in October:
2.68" - Average rainfall in November:
1.46" - Average rainfall in December:
1.65"
The wettest month (with the highest rainfall) is June (4.76").
The driest month (with the least rainfall) is January (1.14").
Average rainfall days
Coster, IA
- Average rainfall days in January:
5.1 days - Average rainfall days in February:
4.9 days - Average rainfall days in March:
11.2 days - Average rainfall days in April:
15.9 days - Average rainfall days in May:
19 days - Average rainfall days in June:
20.1 days
- Average rainfall days in July:
18.3 days - Average rainfall days in August:
14.5 days - Average rainfall days in September:
12.9 days - Average rainfall days in October:
11.2 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
6.4 days
The month with the highest number of rainy days is June (20.1 days).
The month with the least rainy days is February (4.9 days).
Average snowfall
Coster, IA
- Average snowfall in January:
5.31" - Average snowfall in February:
5.51" - Average snowfall in March:
2.76" - Average snowfall in April:
2.01" - Average snowfall in May:
0.35" - Average snowfall in June:
0"
The month with the highest snowfall is February (5.51").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Coster, IA
- Average snowfall days in January:
13.5 days - Average snowfall days in February:
11.8 days - Average snowfall days in March:
7.3 days - Average snowfall days in April:
2.3 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:
1.3 days - Average snowfall days in November:
4.3 days - Average snowfall days in December:
12.5 days
The month with the highest number of snowfall days is January (13.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Coster, 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 2min
- 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 0min - 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 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
3h and 5min - Average sunshine in February:
4h and 1min - Average sunshine in March:
6h and 1min - Average sunshine in April:
7h and 4min - Average sunshine in May:
8h and 3min - 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 3min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days
Coster, IA
- Average sunshine days in January:
14.8 days - Average sunshine days in February:
12.3 days - Average sunshine days in March:
13.1 days - Average sunshine days in April:
11.1 days - Average sunshine days in May:
9.5 days - Average sunshine days in June:
7.8 days
- Average sunshine days in July:
8.8 days - Average sunshine days in August:
12.9 days - Average sunshine days in September:
14.6 days - Average sunshine days in October:
16.5 days - Average sunshine days in November:
17.4 days - Average sunshine days in December:
15.8 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (7.8 days).
Average UV index
Coster, IA
The month with the highest UV index is June (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover
Coster, 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
Coster, IA
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
Coster, Iowa, USA
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
