May weather forecastDexter, IA
May
Weather in May
May, the last month of the spring in Dexter, is a pleasant month, with an average temperature ranging between max 69.3°F (20.7°C) and min 52.3°F (11.3°C).Temperature
Dexter's transition into May is marked by a rise in the average high-temperature, advancing from a moderate 59.2°F (15.1°C) in April to a pleasant 69.3°F (20.7°C). In May, the average low-temperature records at a fresh 52.3°F (11.3°C) during the nights.Humidity
In May, the average relative humidity in Dexter, Iowa, is 78%.Rainfall
In May, the rain falls for 16.4 days. Throughout May, 3.07" (78mm) of precipitation is accumulated. Throughout the year, there are 117.3 rainfall days, and 19.09" (485mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.2 snowfall days, in May, Dexter aggregates 0.2" (5mm) of snow. Throughout the year, there are 31.7 snowfall days, and 9.29" (236mm) of snow is accumulated.Daylight
In Dexter, the average length of the day in May is 14h and 32min.On the first day of May, sunrise is at 6:12 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:45 am and sunset at 8:44 pm CDT.
Sunshine
The average sunshine in May is 8.5h.UV index
The average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the average person.Note: The daily maximum UV index of 5 in May interprets into the following advice:
Ensure safety - Imperative it is to shield skin and eyes from damage. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Always opt for UVA and UVB-resistant sunglasses on radiant days. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Dexter, IA
- Average high temperature in May: 69.3°F
The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (28°F).
- Average low temperature in May: 52.3°F
The month with the highest average low temperature is July (64.9°F).
The coldest month (with the lowest average low temperature) is January (14.5°F).
Average pressure in May
Dexter, IA
- Average pressure in May: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in May
Dexter, IA
- Average wind speed in May: 8.9mph
The windiest months (with the highest average wind speed) are January and February (10.6mph).
The calmest month (with the lowest average wind speed) is July (7.1mph).
Average humidity in May
Dexter, IA
- Average humidity in May: 78%
The months with the highest relative humidity are January and February (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in May
Dexter, IA
- Average rainfall in May: 3.07"
The wettest month (with the highest rainfall) is June (3.11").
The driest month (with the least rainfall) is January (0.55").
Average rainfall days in May
Dexter, IA
- Average rainfall days in May: 16.4 days
The month with the highest number of rainy days is May (16.4 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in May
Dexter, IA
- Average snowfall in May: 0.2"
The month with the highest snowfall is February (2.76").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Dexter, IA
- Average snowfall days in May: 0.2 days
The month with the highest number of snowfall days is January (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Dexter, IA
- Average daylight in May: 14h and 30min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in May: 8h and 30min
The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in May
Dexter, IA
- Average sunshine days in May: 12.1 days
The month with the most sunshine days is December (22 days).
The month with the least sunshine days is May (12.1 days).
Average UV index in May
Dexter, IA
- Average UV index in May: 5
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover in May
Dexter, IA
- Average cloud cover in May: 42
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 30).
Average visibility in May
Dexter, IA
- Average visibility in May: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, September, October, November and December (6mi).
The month with the lowest visibility is August (5mi).
