August weather forecastDorchester, IA
August
Weather in August
August, the last month of the summer in Dorchester, is another warm month, with temperature in the range of an average high of 77.9°F (25.5°C) and an average low of 58.6°F (14.8°C).Temperature
The advent of August denotes an average high-temperature of a still moderately hot 77.9°F (25.5°C), subtly different from July's 79.3°F (26.3°C). In Dorchester, in August, the average low-temperature is a refreshing 58.6°F (14.8°C).Humidity
In August, the average relative humidity in Dorchester is 81%.Rainfall
In August, the rain falls for 12.9 days. Throughout August, 2.36" (60mm) of precipitation is accumulated. Throughout the year, there are 130.5 rainfall days, and 26.5" (673mm) of precipitation is accumulated.Snowfall
In Dorchester, snow does not fall in June through September.Daylight
In Dorchester, the average length of the day in August is 13h and 55min.On the first day of August in Dorchester, sunrise is at 5:56 am and sunset at 8:28 pm. On the last day of the month, sunrise is at 6:29 am and sunset at 7:42 pm CDT.
Sunshine
August has the most sunshine of the year, with an average of 9.8h of sunshine.UV index
The average daily maximum UV index in August is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: In August, a regular UV index of 5 translates into these guidelines:
Undertake protective steps - Preventing sun damage is advised. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in August
Dorchester, IA
- Average high temperature in August: 77.9°F
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (21.7°F).
- Average low temperature in August: 58.6°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is January (8.8°F).
Average pressure in August
Dorchester, IA
- Average pressure in August: 29.96"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
Dorchester, IA
- Average wind speed in August: 6.5mph
The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest months (with the lowest average wind speed) are July and August (6.5mph).
Average humidity in August
Dorchester, IA
- Average humidity in August: 81%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is October (76%).
Average rainfall in August
Dorchester, IA
- Average rainfall in August: 2.36"
The wettest month (with the highest rainfall) is June (4.61").
The driest month (with the least rainfall) is January (0.87").
Average rainfall days in August
Dorchester, IA
- Average rainfall days in August: 12.9 days
The month with the highest number of rainy days is June (18 days).
The month with the least rainy days is February (3 days).
Average snowfall in August
Dorchester, IA
- Average snowfall in August: 0"
The month with the highest snowfall is February (5.71").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in August
Dorchester, IA
- Average snowfall days in August: 0 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in August /
Average sunshine in August
Dorchester, IA
- Average daylight in August: 13h and 54min
The month with the longest days is June (Average daylight: 15h and 24min).
The month with the shortest days is December (Average daylight: 9h and 0min).
- Average sunshine in August: 9h and 48min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 3h and 24min).
Average sunshine days in August
Dorchester, IA
- Average sunshine days in August: 14.3 days
The month with the most sunshine days is January (17.7 days).
The month with the least sunshine days is June (9.8 days).
Average UV index in August
Dorchester, IA
- Average UV index in August: 5
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 1).
Average cloud cover in August
Dorchester, IA
- Average cloud cover in August: 32
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in August
Dorchester, IA
- 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, February, March, July, August, September and December (5mi).
