May weather forecast
Fairfax, IA

Weather in May

The last month of the spring, May, is an agreeable month in Fairfax, Iowa, with temperature in the range of an average high of 68.9°F (20.5°C) and an average low of 52.3°F (11.3°C).

Temperature

In May, the average high-temperature rises, from a moderate 57.9°F (14.4°C) in April, to an agreeable 68.9°F (20.5°C). The average low-temperature, in May, is 52.3°F (11.3°C).

Humidity

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

Rainfall

May is the month with the most rainfall in Fairfax. Rain falls for 16 days and accumulates 3.07" (78mm) of precipitation.

Snowfall

May through September are months without snowfall in Fairfax.

Daylight

In Fairfax, the average length of the day in May is 14.6h.

Sunshine

In May, the average sunshine is 8.7h.

UV index

The average daily maximum UV index in May is 5. A UV Index of 3 to 5 symbolizes a medium vulnerability from unsafe exposure to the UV radiation for ordinary individuals.
Note: The daily maximum UV index of 5 in May interpret into the following advice:
Take precautions - Protection against the skin and eye damage is obliged. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.
[Resources]

FAQ

What is the average humidity in May in Fairfax?

The average relative humidity in May in Fairfax, Iowa, is 79%.

What is the wettest month in Fairfax?

May is the month with the most rainfall in Fairfax. Rain falls for 16 days and accumulates 3.07" (78mm) of precipitation.

How many days does it rain in May in Fairfax?

In Fairfax, Iowa, during May, the rain falls for 16 days and regularly aggregates up to 3.07" (78mm) of precipitation.

When it does not snow in Fairfax?

May through September are months without snowfall.

Does it snow in Fairfax in May?

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

What is the average length of the day in May in Fairfax?

In May, the average length of the day in Fairfax, Iowa, is 14.6h.

How many hours of sunshine does Fairfax have in May?

In Fairfax, the average sunshine in May is 8.7h.

What is the UV index intensity in May in Fairfax?

In May, the average daily maximum UV index in Fairfax is 5. A UV Index estimate of 3 to 5 represents a medium hazard to health from unprotected exposure to the UV radiation.

Average temperature in May
Fairfax, IA

Average temperature in May - Fairfax, IA
  • Average high temperature in May: 68.9°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 (26.2°F).

  • Average low temperature in May: 52.3°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 (14.2°F).

[Resources]

Average pressure in May
Fairfax, IA

Average pressure in May - Fairfax, IA
  • Average pressure in May: 29.94"

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

[Resources]

Average wind speed in May
Fairfax, IA

Average wind speed in May - Fairfax, IA
  • Average wind speed in May: 9.1mph

The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).

[Resources]

Average humidity in May
Fairfax, IA

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

The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).

[Resources]

Average rainfall in May
Fairfax, IA

Average rainfall in May - Fairfax, IA
  • Average rainfall in May: 3.07"

The wettest month (with the highest rainfall) is May (3.07").
The driest months (with the least rainfall) are January and February (0.63").

[Resources]

Average rainfall days in May
Fairfax, IA

Average rainfall days in May - Fairfax, IA
  • Average rainfall days in May: 16 days

The month with the highest number of rainy days is May (16 days).
The month with the least rainy days is February (3 days).

[Resources]

Average snowfall in May
Fairfax, IA

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

The month with the highest snowfall is January (2.64").
Months with the least snowfall are May, June, July, August and September (0").

[Resources]

Average snowfall days in May
Fairfax, IA

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

The month with the highest number of snowfall days is January (10.3 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

[Resources]

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

Average daylight in May / Average sunshine in May - Fairfax, IA
  • Average daylight in May: 14.6h

The month with the longest days is June (Average daylight: 15.2h).
The month with the shortest days is December (Average daylight: 9.2h).

  • Average sunshine in May: 8.7h

The month with the most sunshine is July (Average sunshine: 10h).
The month with the least sunshine is January (Average sunshine: 4.1h).

[Resources]

Average sunshine days in May
Fairfax, IA

Average sunshine days in May - Fairfax, IA
  • Average sunshine days in May: 12.3 days

The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is June (11.8 days).

[Resources]

Average UV index in May
Fairfax, IA

Average UV index in May - Fairfax, IA
  • Average UV index in May: 5

Months with the highest UV index are June and July (UV index 6).
Months with the lowest UV index are January and December (UV index 1).

[Resources]

Average cloud cover in May
Fairfax, IA

Average cloud cover in May - Fairfax, IA
  • Average cloud cover in May: 42

The month with the most cloud cover is January (Cloud cover 57).
Months with the least cloud cover are August and September (Cloud cover 30).

[Resources]

Average visibility in May
Fairfax, IA

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

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).

[Resources]

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location
* you will be automatically redirected to the weather forecast for your location