May weather forecast
Monmouth, IA

Share

Weather in May

The last month of the spring, May, is a pleasant month in Monmouth, Iowa, with an average temperature fluctuating between 68.5°F (20.3°C) and 51.6°F (10.9°C).

Temperature

Observing a rise in May, the average high-temperature goes from April's moderate 56.7°F (13.7°C) to an agreeable 68.5°F (20.3°C). During May nights, Monmouth records an average temperature of 51.6°F (10.9°C).

Humidity

In Monmouth, the average relative humidity in May is 79%.

Rainfall

May is the month with the most rainfall. Rain falls for 18.7 days and accumulates 4.53" (115mm) of precipitation.

Snowfall

May through September are months without snowfall.

Daylight

The average length of the day in May is 14h and 35min.
On the first day of May, sunrise is at 5:58 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:32 pm CDT.

Sunshine

The average sunshine in May is 8.4h.

UV index

The average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum daily UV index of 5 during May morphs into the following directions:
Act with care - The suggestion to avoid sunburn is emphasized. To guard against the harmful effects of the Sun, minimize exposure during midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average May temperature?

The high-temperature during May is 68.5°F (20.3°C) and the low-temperature is 51.6°F (10.9°C).

What is the average humidity in May?

In May, the average relative humidity is 79%.

What is the rainiest month?

The month with the most rainfall is May, when the rain falls for 18.7 days and typically aggregates up to 4.53" (115mm) of precipitation.

How much does it rain in May?

In May, the rain falls for 18.7 days. Throughout May, 4.53" (115mm) of precipitation is accumulated.

When it does not snow?

In Monmouth, snow does not fall in May through September.

Does it snow in Monmouth in May?

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

What is the average length of the day in May?

In Monmouth, the average day length in May is 14h and 35min.

When are sunrise and sunset in May?

In May, on the first day of the month, sunrise is at 5:58 am and sunset at 8:03 pm. On the last day of the month, sunrise is at 5:30 am and sunset at 8:32 pm CDT.

How many hours of sunshine does Monmouth have in May?

In May, the average sunshine duration is 8.4h.

What is the UV index reading in May?

In Monmouth, the average daily maximum UV index in May is 5. A UV Index reading of 3 to 5 represents a medium health risk 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
Monmouth, IA

Average temperature in May - Monmouth, IA
  • Average high temperature in May: 68.5°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 (25.9°F).

  • Average low temperature in May: 51.6°F

The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (13.3°F).

Average pressure in May
Monmouth, IA

Average pressure in May - Monmouth, IA
  • Average pressure in May: 29.95"Hg

The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).

Average wind speed in May
Monmouth, IA

Average wind speed in May - Monmouth, IA
  • Average wind speed in May: 8.9mph

The windiest month (with the highest average wind speed) is April (10.5mph).
The calmest months (with the lowest average wind speed) are July and August (6.8mph).

Average humidity in May
Monmouth, IA

Average humidity in May - Monmouth, IA
  • Average humidity in May: 79%

The month with the highest relative humidity is January (86%).
The month with the lowest relative humidity is October (74%).

Average rainfall in May
Monmouth, IA

Average rainfall in May - Monmouth, IA
  • Average rainfall in May: 4.53"

The wettest month (with the highest rainfall) is May (4.53").
The driest month (with the least rainfall) is January (1.34").

Average rainfall days in May
Monmouth, IA

Average rainfall days in May - Monmouth, 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 February (5.3 days).

Average snowfall in May
Monmouth, IA

Average snowfall in May - Monmouth, IA
  • Average snowfall in May: 0"

The month with the highest snowfall is January (5.2").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in May
Monmouth, IA

Average snowfall days in May - Monmouth, IA
  • Average snowfall days in May: 0 days

The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in May /
Average sunshine in May
Monmouth, IA

Average daylight in May / Average sunshine in May - Monmouth, 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 2min

The month with the most sunshine is July (Average sunshine: 9h and 54min).
The months with the least sunshine are January and February (Average sunshine: 3h and 54min).

Average sunshine days in May
Monmouth, IA

Average sunshine days in May - Monmouth, IA
  • Average sunshine days in May: 10.2 days

The month with the most sunshine days is November (18.6 days).
The month with the least sunshine days is May (10.2 days).

Average UV index in May
Monmouth, IA

Average UV index in May - Monmouth, IA
  • 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 and December (UV index 1).

Average cloud cover in May
Monmouth, IA

Average cloud cover in May - Monmouth, IA
  • Average cloud cover in May: 44

The month with the most cloud cover is January (Cloud cover 60).
The months with the least cloud cover are August and September (Cloud cover 31).

Average visibility in May
Monmouth, IA

Average visibility in May - Monmouth, IA
  • Average visibility in May: 6mi

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

Monmouth, Iowa, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location