May weather forecast
Webster City, IA

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Weather in May

The last month of the spring, May, is an agreeable month in Webster City, Iowa, with temperature in the range of an average low of 52.5°F (11.4°C) and an average high of 69.1°F (20.6°C).

Temperature

The onset of May marks an increase in the average high-temperature, moving from a mild 57.6°F (14.2°C) in April to a pleasant 69.1°F (20.6°C). In the month of May, the average temperature dips to a fresh 52.5°F (11.4°C) during the night.

Humidity

In May, the average relative humidity is 73%.

Rainfall

In May, the rain falls for 17.9 days. Throughout May, 3.82" (97mm) of precipitation is accumulated. In Webster City, during the entire year, the rain falls for 135.2 days and collects up to 26.5" (673mm) of precipitation.

Snowfall

Months with snowfall in Webster City are January through May, October through December. May is the last month it regularly snows. During 0.3 snowfall days, in May, Webster City aggregates 0.2" (5mm) of snow. In Webster City, during the entire year, snow falls for 41.8 days and aggregates up to 16.61" (422mm) of snow.

Daylight

In May, the average length of the day is 14h and 38min.
On the first day of the month, sunrise is at 6:08 am and sunset at 8:15 pm. On the last day of May, sunrise is at 5:40 am and sunset at 8:45 pm CDT.

Sunshine

The average sunshine in May is 8.5h.

UV index

In Webster City, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.
Note: In May, a daily maximum UV index of 5 leads to the following instructions:
Adopt protective measures - It is advised to guard against sun damage. Midday is the peak time for the Sun's radiation; stay in the shade and protect yourself. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Note this! The Sun's UV radiation can nearly be doubled by the reflection off snow.
Updated: Jun 21, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Webster City in May?

In May, the average high-temperature and low-temperature are 69.1°F (20.6°C) and 52.5°F (11.4°C) respectively.

What is the average humidity in May?

In Webster City, the average relative humidity in May is 73%.

How many days does it rain in May?

In Webster City, during May, the rain falls for 17.9 days and regularly aggregates up to 3.82" (97mm) of precipitation.

What is the last month it snows?

May is the last month it regularly snows. During 0.3 snowfall days, in May, Webster City aggregates 0.2" (5mm) of snow.

How many hours of daylight does Webster City have in May?

The average day length in May is 14h and 38min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:08 am and sunset at 8:15 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:45 pm CDT.

How long on average sun shines in May?

In May, the average sunshine duration is 8.5h.

What is the UV index intensity in May?

In Webster City, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium hazard to health from exposure to Sun's UV rays.
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
Webster City, IA

Average temperature in May - Webster City, IA
  • Average high temperature in May: 69.1°F

The warmest month (with the highest average high temperature) is July (80.8°F).
The month with the lowest average high temperature is January (25.2°F).

  • Average low temperature in May: 52.5°F

The month with the highest average low temperature is July (63.9°F).
The coldest month (with the lowest average low temperature) is January (12.6°F).

Average pressure in May
Webster City, IA

Average pressure in May - Webster City, 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
Webster City, IA

Average wind speed in May - Webster City, IA
  • Average wind speed in May: 9.4mph

The windiest month (with the highest average wind speed) is April (11mph).
The calmest month (with the lowest average wind speed) is July (7.2mph).

Average humidity in May
Webster City, IA

Average humidity in May - Webster City, IA
  • Average humidity in May: 73%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (69%).

Average rainfall in May
Webster City, IA

Average rainfall in May - Webster City, IA
  • Average rainfall in May: 3.82"

The wettest month (with the highest rainfall) is June (4.02").
The driest month (with the least rainfall) is January (0.98").

Average rainfall days in May
Webster City, IA

Average rainfall days in May - Webster City, IA
  • Average rainfall days in May: 17.9 days

The month with the highest number of rainy days is June (18.1 days).
The month with the least rainy days is February (3.8 days).

Average snowfall in May
Webster City, IA

Average snowfall in May - Webster City, IA
  • Average snowfall in May: 0.2"

The month with the highest snowfall is February (4.65").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Webster City, IA

Average snowfall days in May - Webster City, IA
  • Average snowfall days in May: 0.3 days

The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Webster City, IA

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

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 6min).

  • Average sunshine in May: 8h and 3min

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
Webster City, IA

Average sunshine days in May - Webster City, IA
  • Average sunshine days in May: 11.2 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is June (9.8 days).

Average UV index in May
Webster City, IA

Average UV index in May - Webster City, 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
Webster City, IA

Average cloud cover in May - Webster City, IA
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 58).
The month with the least cloud cover is September (Cloud cover 31).

Average visibility in May
Webster City, IA

Average visibility in May - Webster City, IA
  • Average visibility in May: 6mi

The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).

Webster City, Iowa, USA

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