May weather forecast
West Branch, IA

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Weather in May

May, the last month of the spring in West Branch, is a pleasant month, with temperature in the range of an average low of 52.7°F (11.5°C) and an average high of 69.6°F (20.9°C).

Temperature

May sees a rise in the average high-temperature, climbing from a refreshing 58.6°F (14.8°C) in April to a pleasant 69.6°F (20.9°C). West Branch observes an average nighttime low-temperature of 52.7°F (11.5°C) during the month of May.

Humidity

The average relative humidity in May is 78%.

Rainfall

The month with the most rainfall in West Branch is May, when the rain falls for 18.7 days and typically aggregates up to 4.61" (117mm) of precipitation.

Snowfall

May through September are months without snowfall in West Branch, Iowa.

Daylight

In May, the average length of the day is 14h and 33min.
On the first day of May in West Branch, Iowa, sunrise is at 6:00 am and sunset at 8:04 pm. On the last day of the month, sunrise is at 5:33 am and sunset at 8:33 pm CDT.

Sunshine

In May, the average sunshine in West Branch is 8.8h.

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 in May translates into these instructions:
Exercise prudence. Persons with fair skin could be burned in under 30 minutes. To guard against the harmful effects of the Sun, minimize exposure during midday. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.

Frequently asked questions

What are May temperatures in West Branch?

May temperatures in West Branch vary between a high-temperature of 69.6°F (20.9°C) and a low-temperature of 52.7°F (11.5°C).

What is the average humidity in May in West Branch?

The average relative humidity in May in West Branch is 78%.

What is the rainiest month in West Branch?

The month with the most rainfall in West Branch, Iowa, is May, when the rain falls for 18.7 days and typically aggregates up to 4.61" (117mm) of precipitation.

How many days does it rain in May in West Branch?

In May, in West Branch, the rain falls for 18.7 days. Throughout May, 4.61" (117mm) of precipitation is accumulated.

When it does not snow in West Branch?

In West Branch, snow does not fall in May through September.

Does it snow in West Branch in May?

In May, in West Branch, Iowa, it doesn't snow. April is the latest month when it typically snows.

How many hours of daylight does West Branch have in May?

In May, the average day length is 14h and 33min.

When is the sunrise / sunset in May in West Branch?

In May, on the first day of the month, sunrise is at 6:00 am and sunset at 8:04 pm. On the last day of the month, in West Branch, Iowa, sunrise is at 5:33 am and sunset at 8:33 pm CDT.

How long on average sun shines in May in West Branch?

In May, the average sunshine duration in West Branch, Iowa, is 8.8h.

How high is the UV index in May in West Branch?

In West Branch, the average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium hazard to health 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
West Branch, IA

Average temperature in May - West Branch, IA
  • Average high temperature in May: 69.6°F

The warmest month (with the highest average high temperature) is July (81°F).
The month with the lowest average high temperature is January (27.3°F).

  • Average low temperature in May: 52.7°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (15.4°F).

Average pressure in May
West Branch, IA

Average pressure in May - West Branch, IA
  • Average pressure in May: 29.94"Hg

The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in May
West Branch, IA

Average wind speed in May - West Branch, IA
  • Average wind speed in May: 9mph

The windiest month (with the highest average wind speed) is April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in May
West Branch, IA

Average humidity in May - West Branch, IA
  • Average humidity in May: 78%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (72%).

Average rainfall in May
West Branch, IA

Average rainfall in May - West Branch, IA
  • Average rainfall in May: 4.61"

The wettest month (with the highest rainfall) is May (4.61").
The driest month (with the least rainfall) is January (1.3").

Average rainfall days in May
West Branch, IA

Average rainfall days in May - West Branch, IA
  • Average rainfall days in May: 18.7 days

The month with the highest number of rainy days is May (18.7 days).
The month with the least rainy days is January (4.4 days).

Average snowfall in May
West Branch, IA

Average snowfall in May - West Branch, IA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (5.24").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
West Branch, IA

Average snowfall days in May - West Branch, IA
  • Average snowfall days in May: 0.1 days

The month with the highest number of snowfall days is January (9.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
West Branch, IA

Average daylight in May / Average sunshine in May - West Branch, 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 5min

The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 6min).

Average sunshine days in May
West Branch, IA

Average sunshine days in May - West Branch, IA
  • Average sunshine days in May: 9.7 days

The month with the most sunshine days is November (19 days).
The month with the least sunshine days is June (9.2 days).

Average UV index in May
West Branch, IA

Average UV index in May - West Branch, 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
West Branch, IA

Average cloud cover in May - West Branch, IA
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in May
West Branch, IA

Average visibility in May - West Branch, IA
  • Average visibility in May: 6mi

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

West Branch, Iowa, USA

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