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
May shows a rise in the average high-temperature, moving from April's moderate 56.8°F (13.8°C) to an agreeable 68.5°F (20.3°C). During the month of May, Thor experiences a steady low-temperature average of 52.5°F (11.4°C).Humidity
The average relative humidity in May in Thor, Iowa, is 72%.Rainfall
In Thor, in May, it is raining for 16.8 days, with typically 3.5" (89mm) of accumulated precipitation. Throughout the year, there are 129.4 rainfall days, and 25.04" (636mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Thor. During 0.3 snowfall days, in May, Thor aggregates 0.16" (4mm) of snow. In Thor, during the entire year, snow falls for 44 days and aggregates up to 17.44" (443mm) of snow.Daylight
In Thor, the average length of the day in May is 14h and 39min.On the first day of May, sunrise is at 6:09 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:47 pm CDT.
Sunshine
The average sunshine in May is 8.6h.UV index
In Thor, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A maximum UV index of 5 in May translates into the following recommendations:
Exercise prevention - Precautions against solar damage are endorsed. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average May temperature?
What is the average humidity in May?
How much does it rain in Thor in May?
What is the last month it snows?
How many hours of daylight does Thor have in May?
When are sunrise and sunset in May?
How long on average sun shines in May?
What is the UV index reading in May?
Average temperature in May
Thor, IA
- Average high temperature in May: 68.5°F
The warmest month (with the highest average high temperature) is July (80.6°F).
The month with the lowest average high temperature is January (24.3°F).
- Average low temperature in May: 52.5°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (11.5°F).
Average pressure in May
Thor, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Thor, IA
- Average wind speed in May: 9.4mph
The windiest month (with the highest average wind speed) is April (11mph).
The calmest months (with the lowest average wind speed) are July and August (7.3mph).
Average humidity in May
Thor, IA
- Average humidity in May: 72%
The month with the highest relative humidity is January (87%).
The month with the lowest relative humidity is October (69%).
Average rainfall in May
Thor, IA
- Average rainfall in May: 3.5"
The wettest month (with the highest rainfall) is June (3.7").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days in May
Thor, IA
- Average rainfall days in May: 16.8 days
The month with the highest number of rainy days is June (17.4 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in May
Thor, IA
- Average snowfall in May: 0.16"
The month with the highest snowfall is February (4.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Thor, IA
- Average snowfall days in May: 0.3 days
The month with the highest number of snowfall days is January (11.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Thor, 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 4min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Thor, IA
- Average sunshine days in May: 12.3 days
The month with the most sunshine days is November (18.1 days).
The month with the least sunshine days is June (10.4 days).
Average UV index in May
Thor, IA
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in May
Thor, IA
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is September (Cloud cover 31).
Average visibility in May
Thor, IA
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).
Thor, Iowa, USA
Weather forecast for your location
2. Allow the app to use your location