May weather forecast
Spirit Lake, IA

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Weather in May

The last month of the spring, May, is a refreshing month in Spirit Lake, Iowa, with an average temperature fluctuating between 50.9°F (10.5°C) and 67.6°F (19.8°C).

Temperature

May's arrival coincides with a temperature rise, moving from April's cool 54.9°F (12.7°C) to a comfortable 67.6°F (19.8°C). Spirit Lake witnesses an average low-temperature of 50.9°F (10.5°C) throughout the month of May.

Humidity

The average relative humidity in May is 70%.

Rainfall

In Spirit Lake, in May, it is raining for 17.6 days, with typically 3.35" (85mm) of accumulated precipitation. In Spirit Lake, during the entire year, the rain falls for 124.6 days and collects up to 24.37" (619mm) of precipitation.

Snowfall

Months with snowfall are January through May, October through December. May is the last month it regularly snows. During 0.8 snowfall days, in May, Spirit Lake aggregates 0.2" (5mm) of snow. Throughout the year, there are 47.4 snowfall days, and 21.93" (557mm) of snow is accumulated.

Daylight

In May, the average length of the day is 14h and 43min.
On the first day of May, sunrise is at 6:11 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:53 pm CDT.

Sunshine

In May, the average sunshine in Spirit Lake is 8.5h.

UV index

In May, the average daily maximum UV index is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The UV index of 5 during May translates into the following guidance:
Put precautions into practice - Protective measures against sun-induced damage are advised. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Jun 22, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

Spirit Lake in May has an average high-temperature of 67.6°F (19.8°C) and an average low-temperature of 50.9°F (10.5°C).

What is the average humidity in May?

The average relative humidity in May is 70%.

How many days does it rain in May?

In May, in Spirit Lake, the rain falls for 17.6 days. Throughout May, 3.35" (85mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.8 snowfall days, in May, Spirit Lake aggregates 0.2" (5mm) of snow.

What is the average length of the day in May?

In Spirit Lake, the average day length in May is 14h and 43min.

When are sunrise and sunset in May in Spirit Lake?

In May, on the first day of the month, sunrise is at 6:11 am and sunset at 8:22 pm. On the last day of the month, sunrise is at 5:42 am and sunset at 8:53 pm CDT.

How long on average sun shines in May?

In May, the average sunshine duration in Spirit Lake is 8.5h.

How high is the UV index in May in Spirit Lake?

In May, the average daily maximum UV index is 5. A UV Index of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in May
Spirit Lake, IA

Average temperature in May - Spirit Lake, IA
  • Average high temperature in May: 67.6°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 (22.5°F).

  • Average low temperature in May: 50.9°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 (9.3°F).

Average pressure in May
Spirit Lake, IA

Average pressure in May - Spirit Lake, 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 (29.87"Hg).

Average wind speed in May
Spirit Lake, IA

Average wind speed in May - Spirit Lake, IA
  • Average wind speed in May: 9.8mph

The windiest months (with the highest average wind speed) are January, February and April (11.2mph).
The calmest month (with the lowest average wind speed) is July (7.8mph).

Average humidity in May
Spirit Lake, IA

Average humidity in May - Spirit Lake, IA
  • Average humidity in May: 70%

The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is October (68%).

Average rainfall in May
Spirit Lake, IA

Average rainfall in May - Spirit Lake, IA
  • Average rainfall in May: 3.35"

The wettest month (with the highest rainfall) is June (3.9").
The driest month (with the least rainfall) is January (0.83").

Average rainfall days in May
Spirit Lake, IA

Average rainfall days in May - Spirit Lake, IA
  • Average rainfall days in May: 17.6 days

The month with the highest number of rainy days is June (18.8 days).
The month with the least rainy days is February (2.1 days).

Average snowfall in May
Spirit Lake, IA

Average snowfall in May - Spirit Lake, IA
  • Average snowfall in May: 0.2"

The month with the highest snowfall is February (5.47").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Spirit Lake, IA

Average snowfall days in May - Spirit Lake, IA
  • Average snowfall days in May: 0.8 days

The month with the highest number of snowfall days is December (10.9 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Spirit Lake, IA

Average daylight in May / Average sunshine in May - Spirit Lake, IA
  • Average daylight in May: 14h and 4min

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 3min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).

Average sunshine days in May
Spirit Lake, IA

Average sunshine days in May - Spirit Lake, IA
  • Average sunshine days in May: 11 days

The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is June (8.6 days).

Average UV index in May
Spirit Lake, IA

Average UV index in May - Spirit Lake, IA
  • 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
Spirit Lake, IA

Average cloud cover in May - Spirit Lake, IA
  • Average cloud cover in May: 43

The month with the most cloud cover is January (Cloud cover 59).
The month with the least cloud cover is July (Cloud cover 31).

Average visibility in May
Spirit Lake, IA

Average visibility in May - Spirit Lake, IA
  • 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).

Spirit Lake, Iowa, USA

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