Contents
- Weather in May
- Frequently asked questions
- Average temperature in May
- Average pressure in May
- Average wind speed in May
- Average humidity in May
- Average rainfall in May
- Average rainfall days in May
- Average snowfall in May
- Average snowfall days in May
- Average daylight in May
- Average sunshine in May
- Average sunshine days in May
- Average UV index in May
- Average cloud cover in May
- Average visibility in May
Weather in May
Temperature
Janesville experiences a temperature shift with the start of May, with average high-temperatures moving from a moderate 56.1°F (13.4°C) in April to a comfortable 67.8°F (19.9°C). An average low-temperature of 51.4°F (10.8°C) is noted during the nights in May.Humidity
In Janesville, the average relative humidity in May is 77%.Rainfall
In Janesville, in May, it is raining for 18.7 days, with typically 4.17" (106mm) of accumulated precipitation. In Janesville, during the entire year, the rain falls for 138.7 days and collects up to 28.78" (731mm) of precipitation.Snowfall
Months with snowfall in Janesville are January through May, October through December. May is the last month it regularly snows in Janesville. During 0.2 snowfall days, in May, Janesville aggregates 0.2" (5mm) of snow. Throughout the year, in Janesville, there are 43.6 snowfall days, and 19.25" (489mm) of snow is accumulated.Daylight
In Janesville, the average length of the day in May is 14h and 38min.On the first day of May, sunrise is at 6:03 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 5:34 am and sunset at 8:40 pm CDT.
Sunshine
The average sunshine in May in Janesville, Iowa, is 8.5h.UV index
In May, the average daily maximum UV index in Janesville is 5. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 5 in May translates into this advice:
Adopt protective measures - Suggestions to resist sunburn are offered. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.
Frequently asked questions
What is the temperature in May in Janesville?
What is the average humidity in May in Janesville?
How much does it rain in Janesville in May?
What is the last month it snows in Janesville?
What is the average length of the day in May in Janesville?
What time are sunrise and sunset in May in Janesville?
How many hours of sunshine does Janesville have in May?
How high is the UV index in May in Janesville?
Average temperature in May
Janesville, IA
- Average high temperature in May: 67.8°F
The warmest month (with the highest average high temperature) is July (79.5°F).
The month with the lowest average high temperature is January (23.9°F).
- Average low temperature in May: 51.4°F
The month with the highest average low temperature is July (63°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in May
Janesville, IA
- Average pressure in May: 29.94"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in May
Janesville, IA
- Average wind speed in May: 9.2mph
The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in May
Janesville, IA
- Average humidity in May: 77%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (72%).
Average rainfall in May
Janesville, IA
- Average rainfall in May: 4.17"
The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in May
Janesville, IA
- Average rainfall days in May: 18.7 days
The month with the highest number of rainy days is June (19.4 days).
The month with the least rainy days is February (3.9 days).
Average snowfall in May
Janesville, IA
- Average snowfall in May: 0.2"
The month with the highest snowfall is February (5.08").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Janesville, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Janesville, IA
- Average daylight in May: 14h and 4min
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 May: 8h and 3min
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 in May
Janesville, IA
- Average sunshine days in May: 10.3 days
The months with the most sunshine days are October and November (17.8 days).
The month with the least sunshine days is June (9.2 days).
Average UV index in May
Janesville, IA
- Average UV index in May: 5
The month with the highest UV index is June (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Janesville, IA
- Average cloud cover in May: 43
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in May
Janesville, IA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Janesville, Iowa, USA
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