May weather forecast
Lambs Grove, IA

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Weather in May

The last month of the spring, May, is a pleasant month in Lambs Grove, Iowa, with temperature in the range of an average low of 52.5°F (11.4°C) and an average high of 69.3°F (20.7°C).

Temperature

May indicates a change in the average high-temperature, moving up from a moderate 58.8°F (14.9°C) in April to an agreeable 69.3°F (20.7°C). Lambs Grove experiences a nighttime temperature average of 52.5°F (11.4°C) during May.

Humidity

In Lambs Grove, the average relative humidity in May is 78%.

Rainfall

May is the month with the most rainfall. Rain falls for 14.7 days and accumulates 2.13" (54mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. May is the last month it regularly snows. During 0.2 snowfall days, in May, Lambs Grove aggregates 0.04" (1mm) of snow. In Lambs Grove, Iowa, during the entire year, snow falls for 28.8 days and aggregates up to 5.28" (134mm) of snow.

Daylight

In Lambs Grove, the average length of the day in May is 14h and 34min.
On the first day of the month, sunrise is at 6:07 am and sunset at 8:10 pm. On the last day of May, sunrise is at 5:40 am and sunset at 8:40 pm CDT.

Sunshine

In May, the average sunshine is 8.6h.

UV index

In Lambs Grove, the average daily maximum UV index in May is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unprotected exposure to Sun's UV rays for the ordinary person.
Note: A daily high UV index of 5 in May leads to these guidelines:
Safety measures are advised. Light-skinned individuals may experience burns in under half an hour. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Consider a wide-brim hat essential for effective sun defense covering your face, neck, and eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Updated: Jul 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

In Lambs Grove, 69.3°F (20.7°C) is the average high-temperature and 52.5°F (11.4°C) is the average low-temperature during May.

What is the average humidity in May?

The average relative humidity in May is 78%.

What is the wettest month?

May is the month with the most rainfall. Rain falls for 14.7 days and accumulates 2.13" (54mm) of precipitation.

How many days does it rain in May?

In May, the rain falls for 14.7 days. Throughout May, 2.13" (54mm) of precipitation is accumulated.

What is the last month it snows?

May is the last month it regularly snows. During 0.2 snowfall days, in May, Lambs Grove aggregates 0.04" (1mm) of snow.

How many hours of daylight does Lambs Grove have in May?

The average day length in May is 14h and 34min.

When is the sunrise / sunset in May?

On the first day of May, sunrise is at 6:07 am and sunset at 8:10 pm. On the last day of the month, sunrise is at 5:40 am and sunset at 8:40 pm CDT.

How many hours of sunshine does Lambs Grove have in May?

The average sunshine duration in May is 8.6h.

What is the UV index intensity in May?

The average daily maximum UV index in May is 5. A UV Index estimate of 3 to 5 represents a moderate vulnerability from unsafe 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
Lambs Grove, IA

Average temperature in May - Lambs Grove, IA
  • Average high temperature in May: 69.3°F

The warmest month (with the highest average high temperature) is July (81.5°F).
The month with the lowest average high temperature is January (27.1°F).

  • Average low temperature in May: 52.5°F

The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (14.4°F).

Average pressure in May
Lambs Grove, IA

Average pressure in May - Lambs Grove, 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 (29.89"Hg).

Average wind speed in May
Lambs Grove, IA

Average wind speed in May - Lambs Grove, IA
  • Average wind speed in May: 9mph

The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

Average humidity in May
Lambs Grove, IA

Average humidity in May - Lambs Grove, IA
  • Average humidity in May: 78%

The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is October (71%).

Average rainfall in May
Lambs Grove, IA

Average rainfall in May - Lambs Grove, IA
  • Average rainfall in May: 2.13"

The wettest month (with the highest rainfall) is May (2.13").
The driest months (with the least rainfall) are January, February and December (0.39").

Average rainfall days in May
Lambs Grove, IA

Average rainfall days in May - Lambs Grove, IA
  • Average rainfall days in May: 14.7 days

The month with the highest number of rainy days is May (14.7 days).
The month with the least rainy days is February (3.4 days).

Average snowfall in May
Lambs Grove, IA

Average snowfall in May - Lambs Grove, IA
  • Average snowfall in May: 0.04"

The month with the highest snowfall is January (1.73").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in May
Lambs Grove, IA

Average snowfall days in May - Lambs Grove, IA
  • Average snowfall days in May: 0.2 days

The month with the highest number of snowfall days is January (8.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Lambs Grove, IA

Average daylight in May / Average sunshine in May - Lambs Grove, 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 12min).

  • Average sunshine in May: 8h and 4min

The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

Average sunshine days in May
Lambs Grove, IA

Average sunshine days in May - Lambs Grove, IA
  • Average sunshine days in May: 13.6 days

The month with the most sunshine days is December (22.9 days).
The month with the least sunshine days is June (12.2 days).

Average UV index in May
Lambs Grove, IA

Average UV index in May - Lambs Grove, 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 and December (UV index 1).

Average cloud cover in May
Lambs Grove, IA

Average cloud cover in May - Lambs Grove, IA
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 55).
The months with the least cloud cover are July and September (Cloud cover 30).

Average visibility in May
Lambs Grove, IA

Average visibility in May - Lambs Grove, IA
  • Average visibility in May: 6mi

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

Lambs Grove, Iowa, USA

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