August weather - Summer 2025

The warmest month (with the highest average high temperature) is July (81.9°F).
The month with the lowest average high temperature is January (25.5°F).

Average low temperature in August: 61.3°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 (13.3°F).

Average pressure in August
Schleswig, IA

Average pressure in August: 29.96"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.87"Hg).

Average wind speed in August
Schleswig, IA

Average wind speed in August: 7.7mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.5mph).

Average humidity in August
Schleswig, IA

Average humidity in August: 79%

The month with the highest relative humidity is January (84%).
The months with the lowest relative humidity are April and October (67%).

Average rainfall in August
Schleswig, IA

Average rainfall in August: 1.1"

The wettest month (with the highest rainfall) is May (1.57").
The driest month (with the least rainfall) is January (0.24").

Average rainfall days in August
Schleswig, IA

Average rainfall days in August: 12.5 days

The month with the highest number of rainy days is May (13.8 days).
The months with the least rainy days are January and February (2.3 days).

Average snowfall in August
Schleswig, IA

Average snowfall in August: 0"

The month with the highest snowfall is February (1.26").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in August
Schleswig, IA

Average snowfall days in August: 0 days

The month with the highest number of snowfall days is January (7.7 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Schleswig, IA

Average daylight in August: 13h and 5min

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 August: 9h and 3min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in August
Schleswig, IA

Average sunshine days in August: 16 days

The month with the most sunshine days is November (23 days).
The month with the least sunshine days is May (14.2 days).

Average UV index in August
Schleswig, IA

Average UV index in August: 5

The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and February (UV index 1).

Average cloud cover in August
Schleswig, IA

Average cloud cover in August: 32

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in August
Schleswig, IA

Average visibility in August: 6mi

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).