Climate and monthly weather forecastCarter Lake, IA
Climate and monthly weather forecast
Weather in January
January, like December, is a freezing cold winter month in Carter Lake, Iowa, with an average temperature fluctuating between 30°F (-1.1°C) and 16.3°F (-8.7°C). January stands out as Carter Lake's coldest month, with temperatures ranging between an average high of 30°F (-1.1°C) and a low of 16.3°F (-8.7°C). Weather in January »Weather in February
The last month of the winter, February, is an icy month in Carter Lake, Iowa, with an average temperature varying between 34°F (1.1°C) and 19.8°F (-6.8°C). As Carter Lake, Iowa, steps into February, the average high-temperature holds at a wintry 34°F (1.1°C), hinting at a minor fluctuation from the prior month. Weather in February »Weather in March
The first month of the spring, March, is a frosty month in Carter Lake, Iowa, with an average temperature varying between 33.4°F (0.8°C) and 49.6°F (9.8°C). The shift into March is characterized by a noticeable escalation in the average high-temperature, rising from February's icy 34°F (1.1°C) to a frosty 49.6°F (9.8°C). Weather in March »Weather in April
April is a refreshing spring month in Carter Lake, Iowa, with an average temperature varying between 43.3°F (6.3°C) and 61°F (16.1°C). With the onset of April, Carter Lake experiences a temperature shift, with the average high-temperature moving from a chilly 49.6°F (9.8°C) in March to a refreshing 61°F (16.1°C). Weather in April »Weather in May
The last month of the spring, May, is an agreeable month in Carter Lake, Iowa, with an average temperature varying between 53.6°F (12°C) and 71.1°F (21.7°C). Carter Lake experiences a temperature shift with the start of May, with average high-temperatures moving from a comfortable 61°F (16.1°C) in April to an agreeable 71.1°F (21.7°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Carter Lake, Iowa, with an average temperature fluctuating between 64.2°F (17.9°C) and 81.3°F (27.4°C). Carter Lake's weather shows a temperature rise with the arrival of June, moving from an agreeable 71.1°F (21.7°C) in May to a warm 81.3°F (27.4°C). Weather in June »Weather in July
July, like June, in Carter Lake, Iowa, is a moderately hot summer month, with temperature in the range of an average low of 65.8°F (18.8°C) and an average high of 84.4°F (29.1°C). The warmest period tends to be July, when average temperatures fluctuate between a high of 84.4°F (29.1°C) and a low of 65.8°F (18.8°C). The heat index for July is appraised at a tropical 93.2°F (34°C). Weather in July »Weather in August
August, the last month of the summer in Carter Lake, is also a moderately hot month, with temperature in the range of an average low of 63.1°F (17.3°C) and an average high of 82.6°F (28.1°C). The arrival of August brings an average high-temperature of a still moderately hot 82.6°F (28.1°C), subtly diverging from July's 84.4°F (29.1°C). Weather in August »Weather in September
The first month of the autumn, September, is still a warm month in Carter Lake, Iowa, with temperature in the range of an average high of 76.6°F (24.8°C) and an average low of 57°F (13.9°C). In September, the average high-temperature marginally drops from 82.6°F (28.1°C) in August to a still warm 76.6°F (24.8°C). Weather in September »Weather in October
October, like September, in Carter Lake, Iowa, is another comfortable autumn month, with an average temperature varying between 61.7°F (16.5°C) and 45.1°F (7.3°C). In Carter Lake, the average high-temperature in October drops, from a warm 76.6°F (24.8°C) in September, to an enjoyable 61.7°F (16.5°C). Weather in October »Weather in November
November, the last month of the autumn in Carter Lake, is another chilly month, with an average temperature fluctuating between 33.8°F (1°C) and 48.9°F (9.4°C). In Carter Lake, the beginning of November is marked by a lowered average high-temperature, shifting from October's enjoyable 61.7°F (16.5°C) to a chilly 48.9°F (9.4°C). Weather in November »Weather in December
December, the first month of the winter in Carter Lake, is also a wintry month, with an average temperature fluctuating between 21.9°F (-5.6°C) and 34.3°F (1.3°C). Carter Lake's weather in December is marked by a clear decrease in the average high-temperature, moving down from November's frosty 48.9°F (9.4°C) to an icy 34.3°F (1.3°C). Weather in December »Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature
Carter Lake, IA
The warmest month (with the highest average high temperature) is July (84.4°F).
The month with the lowest average high temperature is January (30°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (16.3°F).
Average pressure
Carter Lake, IA
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.06"Hg - Average pressure in April:
29.92"Hg - Average pressure in May:
29.92"Hg - Average pressure in June:
29.86"Hg
- Average pressure in July:
29.94"Hg - Average pressure in August:
29.95"Hg - Average pressure in September:
29.99"Hg - Average pressure in October:
30"Hg - Average pressure in November:
30.08"Hg - Average pressure in December:
30.13"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).
Average wind speed
Carter Lake, IA
- Average wind speed in January:
10.1mph - Average wind speed in February:
10.3mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.5mph - Average wind speed in May:
8.9mph - Average wind speed in June:
8.4mph
- Average wind speed in July:
7mph - Average wind speed in August:
7.3mph - Average wind speed in September:
8.3mph - Average wind speed in October:
9.5mph - Average wind speed in November:
10.1mph - Average wind speed in December:
9.8mph
The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest month (with the lowest average wind speed) is July (7mph).
Average humidity
Carter Lake, IA
The month with the highest relative humidity is January (80%).
The month with the lowest relative humidity is October (66%).
Average rainfall
Carter Lake, IA
- Average rainfall in January:
0.59" - Average rainfall in February:
0.71" - Average rainfall in March:
1.22" - Average rainfall in April:
1.97" - Average rainfall in May:
3.46" - Average rainfall in June:
3.86"
- Average rainfall in July:
2.05" - Average rainfall in August:
2.64" - Average rainfall in September:
2.09" - Average rainfall in October:
1.85" - Average rainfall in November:
0.79" - Average rainfall in December:
1.3"
The wettest month (with the highest rainfall) is June (3.86").
The driest month (with the least rainfall) is January (0.59").
Average rainfall days
Carter Lake, IA
- Average rainfall days in January:
4.6 days - Average rainfall days in February:
3 days - Average rainfall days in March:
9.9 days - Average rainfall days in April:
14.3 days - Average rainfall days in May:
16.3 days - Average rainfall days in June:
15.9 days
- Average rainfall days in July:
13.2 days - Average rainfall days in August:
13.5 days - Average rainfall days in September:
12 days - Average rainfall days in October:
9.4 days - Average rainfall days in November:
5.5 days - Average rainfall days in December:
4.9 days
The month with the highest number of rainy days is May (16.3 days).
The month with the least rainy days is February (3 days).
Average snowfall
Carter Lake, IA
- Average snowfall in January:
2.17" - Average snowfall in February:
2.56" - Average snowfall in March:
1.18" - 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 (2.56").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Carter Lake, IA
- Average snowfall days in January:
8.8 days - Average snowfall days in February:
7.7 days - Average snowfall days in March:
3.8 days - Average snowfall days in April:
1.3 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:
0.7 days - Average snowfall days in November:
2.2 days - Average snowfall days in December:
6.9 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight / Average sunshine
Carter Lake, IA
- Average daylight in January:
9h and 36min - Average daylight in February:
10h and 36min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 24min - Average daylight in May:
14h and 30min - Average daylight in June:
15h and 6min
- Average daylight in July:
14h and 48min - Average daylight in August:
13h and 48min - Average daylight in September:
12h and 30min - Average daylight in October:
11h and 6min - Average daylight in November:
9h and 54min - Average daylight in December:
9h and 18min
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 18min).
- Average sunshine in January:
4h and 42min - Average sunshine in February:
5h and 30min - Average sunshine in March:
6h and 30min - Average sunshine in April:
8h and 18min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 18min
- Average sunshine in July:
10h and 36min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 0min - Average sunshine in October:
6h and 6min - Average sunshine in November:
5h and 54min - Average sunshine in December:
5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days
Carter Lake, IA
- Average sunshine days in January:
18.4 days - Average sunshine days in February:
17.6 days - Average sunshine days in March:
17.1 days - Average sunshine days in April:
13.6 days - Average sunshine days in May:
12.4 days - Average sunshine days in June:
10.9 days
- Average sunshine days in July:
13.8 days - Average sunshine days in August:
14.5 days - Average sunshine days in September:
16.6 days - Average sunshine days in October:
19.1 days - Average sunshine days in November:
21.1 days - Average sunshine days in December:
20.6 days
The month with the most sunshine days is November (21.1 days).
The month with the least sunshine days is June (10.9 days).
Average UV index
Carter Lake, IA
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover
Carter Lake, IA
The month with the most cloud cover is January (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility
Carter Lake, IA
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).





