Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
The transition from July to August sees average high-temperatures adjusting to a still moderately hot 76.6°F (24.8°C), from a not significantly different 78.8°F (26°C). An average nighttime temperature of 56.7°F (13.7°C) is observed during August.Humidity
The average relative humidity in August is 79%.Rainfall
In Hannibal, in August, during 15.2 rainfall days, 2.48" (63mm) of precipitation is typically accumulated. Throughout the year, in Hannibal, Wisconsin, there are 137.4 rainfall days, and 26.26" (667mm) of precipitation is accumulated.Snowfall
In Hannibal, snow does not fall in June through September.Daylight
In Hannibal, the average length of the day in August is 14h and 2min.On the first day of August, sunrise is at 5:48 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 7:41 pm CDT.
Sunshine
In Hannibal, Wisconsin, the average sunshine in August is 9.4h.UV index
The months with the highest UV index are May through August, with an average maximum UV index of 5. A UV Index value of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: In August, the average maximum UV index of 5 translates into the following recommendations:
Ensure safety - Imperative it is to shield skin and eyes from damage. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average August temperature in Hannibal?
What is the average humidity in August in Hannibal?
How much does it rain in Hannibal in August?
When it does not snow in Hannibal?
What is the average length of the day in August in Hannibal?
What time are sunrise and sunset in August in Hannibal?
How many hours of sunshine does Hannibal have in August?
When is the highest UV index in Hannibal?
How high is the UV index in August in Hannibal?
Average temperature in August
Hannibal, WI
- Average high temperature in August: 76.6°F
The warmest month (with the highest average high temperature) is July (78.8°F).
The month with the lowest average high temperature is January (18.7°F).
- Average low temperature in August: 56.7°F
The month with the highest average low temperature is July (58.6°F).
The coldest month (with the lowest average low temperature) is January (6.1°F).
Average pressure in August
Hannibal, WI
- Average pressure in August: 29.95"Hg
The months with the highest atmospheric pressure are January and February (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Hannibal, WI
- Average wind speed in August: 6.6mph
The windiest month (with the highest average wind speed) is April (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (6.6mph).
Average humidity in August
Hannibal, WI
- Average humidity in August: 79%
The months with the highest relative humidity are January and February (92%).
The month with the lowest relative humidity is May (76%).
Average rainfall in August
Hannibal, WI
- Average rainfall in August: 2.48"
The wettest month (with the highest rainfall) is June (4.06").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in August
Hannibal, WI
- Average rainfall days in August: 15.2 days
The month with the highest number of rainy days is May (18.3 days).
The months with the least rainy days are January and February (3.7 days).
Average snowfall in August
Hannibal, WI
- Average snowfall in August: 0"
The month with the highest snowfall is February (7.44").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Hannibal, WI
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (17.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Hannibal, WI
- Average daylight in August: 14h and 0min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in August: 9h and 2min
The month with the most sunshine is July (Average sunshine: 9h and 42min).
The months with the least sunshine are January and February (Average sunshine: 2h and 48min).
Average sunshine days in August
Hannibal, WI
- Average sunshine days in August: 13 days
The month with the most sunshine days is October (15.6 days).
The month with the least sunshine days is June (9.3 days).
Average UV index in August
Hannibal, WI
- Average UV index in August: 5
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in August
Hannibal, WI
- Average cloud cover in August: 36
The months with the most cloud cover are January and February (Cloud cover 72).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in August
Hannibal, WI
- Average visibility in August: 5mi
The months with the highest visibility are April, May, June, October and November (6mi).
The months with the lowest visibility are January and February (4mi).
Hannibal, Wisconsin, USA
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