May weather forecast
Stillwater, MN

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Weather in May

May, the last month of the spring in Stillwater, is a comfortable month, with temperature in the range of an average low of 48°F (8.9°C) and an average high of 65.3°F (18.5°C).

Temperature

The onset of May marks an increase in the average high-temperature, moving from a fresh 51.8°F (11°C) in April to a comfortable 65.3°F (18.5°C). Throughout May, Stillwater witnesses a nighttime temperature average of 48°F (8.9°C).

Humidity

In Stillwater, the average relative humidity in May is 74%.

Rainfall

In Stillwater, during May, the rain falls for 14.4 days and regularly aggregates up to 2.64" (67mm) of precipitation. Throughout the year, in Stillwater, Minnesota, there are 121.8 rainfall days, and 21.38" (543mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Stillwater are January through May, October through December. May is the last month it regularly snows in Stillwater. During 0.7 snowfall days, in May, Stillwater aggregates 0.43" (11mm) of snow. Throughout the year, there are 66.7 snowfall days, and 22.24" (565mm) of snow is accumulated.

Daylight

The average length of the day in May is 14h and 53min.
On the first day of May, sunrise is at 5:59 am and sunset at 8:17 pm. On the last day of the month, sunrise is at 5:27 am and sunset at 8:50 pm CDT.

Sunshine

In May, the average sunshine is 8.5h.

UV index

The average daily maximum UV index in May in Stillwater is 5. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for ordinary individuals.
Note: The maximum daily UV index of 5 in May converts into the following recommendations:
Stay alert. Light-skinned people could suffer burns in less than 30 minutes. It's recommended to limit sun exposure when its radiation is at its peak during midday. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Mark this! Snow reflection can nearly double the UV radiation intensity from the Sun.
Updated: Feb 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are May temperatures in Stillwater?

In May, the average high-temperature and low-temperature in Stillwater are 65.3°F (18.5°C) and 48°F (8.9°C) respectively.

What is the average humidity in May in Stillwater?

The average relative humidity in May in Stillwater, Minnesota, is 74%.

How much does it rain in Stillwater in May?

In May, in Stillwater, the rain falls for 14.4 days. Throughout May, 2.64" (67mm) of precipitation is accumulated.

What is the last month it snows in Stillwater?

May is the last month it regularly snows in Stillwater. During 0.7 snowfall days, in May, Stillwater aggregates 0.43" (11mm) of snow.

How many hours of daylight does Stillwater have in May?

The average day length in May in Stillwater, Minnesota, is 14h and 53min.

When are sunrise and sunset in May in Stillwater?

In May, on the first day of the month, sunrise is at 5:59 am and sunset at 8:17 pm. On the last day of the month, in Stillwater, Minnesota, sunrise is at 5:27 am and sunset at 8:50 pm CDT.

How long on average sun shines in May in Stillwater?

In May, the average sunshine duration is 8.5h.

How high is the UV index in May in Stillwater?

In May, the average daily maximum UV index in Stillwater is 5. A UV Index reading of 3 to 5 represents a moderate health threat from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Stillwater, MN

Average temperature in May - Stillwater, MN
  • Average high temperature in May: 65.3°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 (19.4°F).

  • Average low temperature in May: 48°F

The month with the highest average low temperature is July (62.1°F).
The coldest month (with the lowest average low temperature) is January (6.6°F).

Average pressure in May
Stillwater, MN

Average pressure in May - Stillwater, MN
  • Average pressure in May: 29.94"Hg

The months with the highest atmospheric pressure are January and February (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).

Average wind speed in May
Stillwater, MN

Average wind speed in May - Stillwater, MN
  • Average wind speed in May: 8.2mph

The windiest month (with the highest average wind speed) is April (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6.7mph).

Average humidity in May
Stillwater, MN

Average humidity in May - Stillwater, MN
  • Average humidity in May: 74%

The month with the highest relative humidity is January (91%).
The month with the lowest relative humidity is April (73%).

Average rainfall in May
Stillwater, MN

Average rainfall in May - Stillwater, MN
  • Average rainfall in May: 2.64"

The wettest month (with the highest rainfall) is June (3.58").
The driest month (with the least rainfall) is January (0.59").

Average rainfall days in May
Stillwater, MN

Average rainfall days in May - Stillwater, MN
  • Average rainfall days in May: 14.4 days

The month with the highest number of rainy days is June (17 days).
The month with the least rainy days is February (1.9 days).

Average snowfall in May
Stillwater, MN

Average snowfall in May - Stillwater, MN
  • Average snowfall in May: 0.43"

The month with the highest snowfall is February (5.04").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Stillwater, MN

Average snowfall days in May - Stillwater, MN
  • Average snowfall days in May: 0.7 days

The month with the highest number of snowfall days is January (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Stillwater, MN

Average daylight in May / Average sunshine in May - Stillwater, MN
  • Average daylight in May: 14h and 5min

The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).

  • 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 0min).

Average sunshine days in May
Stillwater, MN

Average sunshine days in May - Stillwater, MN
  • Average sunshine days in May: 13.7 days

The month with the most sunshine days is October (17 days).
The month with the least sunshine days is June (10.1 days).

Average UV index in May
Stillwater, MN

Average UV index in May - Stillwater, MN
  • Average UV index in May: 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 May
Stillwater, MN

Average cloud cover in May - Stillwater, MN
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 69).
The months with the least cloud cover are July and August (Cloud cover 32).

Average visibility in May
Stillwater, MN

Average visibility in May - Stillwater, MN
  • Average visibility in May: 6mi

The months with the highest visibility are April, May, June, July, August, September, October and November (6mi).
The month with the lowest visibility is January (4mi).

Stillwater, Minnesota, USA

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