May weather forecastHeron Lake, MN
May
Weather in May
The last month of the spring, May, is a refreshing month in Heron Lake, Minnesota, with an average temperature ranging between max 67.1°F (19.5°C) and min 50.5°F (10.3°C).Temperature
May's onset is marked by a temperature increase, moving from a fresh 54.1°F (12.3°C) in April to a comfortable 67.1°F (19.5°C). An average nighttime temperature of 50.5°F (10.3°C) is recorded during May.Humidity
The average relative humidity in May is 69%.Rainfall
In Heron Lake, Minnesota, in May, during 16.1 rainfall days, 2.68" (68mm) of precipitation is typically accumulated. Throughout the year, in Heron Lake, there are 119.4 rainfall days, and 21.1" (536mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. May is the last month it regularly snows in Heron Lake. During 0.7 snowfall days, in May, Heron Lake aggregates 0.24" (6mm) of snow. In Heron Lake, during the entire year, snow falls for 48.3 days and aggregates up to 20.08" (510mm) of snow.Daylight
In Heron Lake, the average length of the day in May is 14h and 45min.On the first day of the month, sunrise is at 6:12 am and sunset at 8:24 pm. On the last day of May, sunrise is at 5:42 am and sunset at 8:56 pm CDT.
Sunshine
In Heron Lake, the average sunshine in May is 8.7h.UV index
The average daily maximum UV index in May 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: In May, a daily UV index of 5 turns into the following recommendations:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in May
Heron Lake, MN
- Average high temperature in May: 67.1°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (21.7°F).
- Average low temperature in May: 50.5°F
The month with the highest average low temperature is July (62.2°F).
The coldest month (with the lowest average low temperature) is January (8.6°F).
Average pressure in May
Heron Lake, MN
- 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 (29.87"Hg).
Average wind speed in May
Heron Lake, MN
- Average wind speed in May: 9.7mph
The windiest months (with the highest average wind speed) are January, February and April (11.1mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).
Average humidity in May
Heron Lake, MN
- Average humidity in May: 69%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (68%).
Average rainfall in May
Heron Lake, MN
- Average rainfall in May: 2.68"
The wettest month (with the highest rainfall) is June (3.23").
The driest month (with the least rainfall) is January (0.67").
Average rainfall days in May
Heron Lake, MN
- Average rainfall days in May: 16.1 days
The month with the highest number of rainy days is June (17.2 days).
The months with the least rainy days are January and February (2.3 days).
Average snowfall in May
Heron Lake, MN
- Average snowfall in May: 0.24"
The month with the highest snowfall is February (4.84").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in May
Heron Lake, MN
- Average snowfall days in May: 0.7 days
The month with the highest number of snowfall days is December (11.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in May /
Average sunshine in May
Heron Lake, MN
- Average daylight in May: 14h and 48min
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 May: 8h and 42min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 48min).
Average sunshine days in May
Heron Lake, MN
- Average sunshine days in May: 12.8 days
The month with the most sunshine days is November (19.6 days).
The month with the least sunshine days is June (9.9 days).
Average UV index in May
Heron Lake, MN
- Average UV index in May: 5
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February and November (UV index 1).
Average cloud cover in May
Heron Lake, MN
- 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 July (Cloud cover 30).
Average visibility in May
Heron Lake, MN
- Average visibility in May: 6mi
The months with the highest visibility are February, March, April, May, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is January (5mi).
