April weather forecast and climate
Flagstaff, AZ

The brown iconic clock tower in the city of Flagstaff, Arizona, with the street signs of Birch Avenue and San Francisco Street
The brown iconic clock tower in the city of Flagstaff, Arizona, with the street signs of Birch Avenue and San Francisco Street

Weather in April

April in Flagstaff, Arizona, is a comfortable spring month, with average temperature varying between 37.2°F (2.9°C) and 61.3°F (16.3°C).

Temperature

In Flagstaff, the average high-temperature in April marginally rises, from a fresh 53.8°F (12.1°C) in March, to a comfortable 61.3°F (16.3°C). In April, in Flagstaff, Arizona, the average low-temperature is 37.2°F (2.9°C).

Humidity

In Flagstaff, the average relative humidity is 36%.

Rainfall

In Flagstaff, during April, the rain falls for 5.6 days and regularly aggregates up to 0.55" (14mm) of precipitation. Throughout the year, there are 74.8 rainfall days, and 12.56" (319mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Flagstaff, snow falls for 2.4 days, with typically accumulated 2.2" (56mm) of snow. Throughout the year, in Flagstaff, there are 30.6 snowfall days, and 28.66" (728mm) of snow is accumulated.

Daylight

In April, the average length of the day in Flagstaff is 13.1h.

Sunshine

In April, the average sunshine in Flagstaff is 10.7h.

UV index

The average daily maximum UV index in Flagstaff is 4. A UV Index value of 3 to 5 symbolizes a medium vulnerability from the exposure to the Sun's UV radiation for average individuals.
Note: The average daily UV index of 4 in April transform into the following instructions:
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. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the temperature in April in Flagstaff?

The average high-temperature, in April, in Flagstaff, Arizona, is 61.3°F (16.3°C), while the average low-temperature is 37.2°F (2.9°C).

What is the average humidity in April in Flagstaff?

In April, the average relative humidity in Flagstaff, Arizona, is 36%.

How many days does it rain in April in Flagstaff?

In Flagstaff, in April, it is raining for 5.6 days, with typically 0.55" (14mm) of accumulated precipitation.

How many days does it snow in April in Flagstaff?

In April, it is snowing for 2.4 days. Throughout April, 2.2" (56mm) of snow is accumulated.

What is the average length of the day in April in Flagstaff?

In April, the average length of the day in Flagstaff, Arizona, is 13.1h.

How many hours of sunshine does Flagstaff have in April?

In Flagstaff, Arizona, the average sunshine in April is 10.7h.

What is the UV index intensity in April in Flagstaff?

In April, the average daily maximum UV index in Flagstaff is 4. A UV Index of 3 to 5 symbolizes a medium health risk from unsafe exposure to the Sun's UV rays.

Average temperature in April
Flagstaff, AZ

Average temperature in April - Flagstaff, AZ
  • Average high temperature in April: 61.3°F

The warmest month (with the highest average high temperature) is July (82.8°F).
Months with the lowest average high temperature are January and December (42.6°F).

  • Average low temperature in April: 37.2°F

The month with the highest average low temperature is July (60.4°F).
The coldest month (with the lowest average low temperature) is December (24.8°F).

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Average pressure in April
Flagstaff, AZ

Average pressure in April - Flagstaff, AZ
  • Average pressure in April: 29.91"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.86").

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Average wind speed in April
Flagstaff, AZ

Average wind speed in April - Flagstaff, AZ
  • Average wind speed in April: 9.6mph

The windiest month (with the highest average wind speed) is April (9.6mph).
The calmest month (with the lowest average wind speed) is August (5.8mph).

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Average humidity in April
Flagstaff, AZ

Average humidity in April - Flagstaff, AZ
  • Average humidity in April: 36%

The month with the highest relative humidity is January (66%).
The month with the lowest relative humidity is June (24%).

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Average rainfall in April
Flagstaff, AZ

Average rainfall in April - Flagstaff, AZ
  • Average rainfall in April: 0.55"

The wettest month (with the highest rainfall) is July (2.56").
The driest month (with the least rainfall) is June (0.24").

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Average rainfall days in April
Flagstaff, AZ

Average rainfall days in April - Flagstaff, AZ
  • Average rainfall days in April: 5.6 days

The month with the highest number of rainy days is July (16.2 days).
Months with the least rainy days are February and November (2.5 days).

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Average snowfall in April
Flagstaff, AZ

Average snowfall in April - Flagstaff, AZ
  • Average snowfall in April: 2.2"

The month with the highest snowfall is December (7.36").
Months with the least snowfall are June, July, August and September (0").

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Average snowfall days in April
Flagstaff, AZ

Average snowfall days in April - Flagstaff, AZ
  • Average snowfall days in April: 2.4 days

The month with the highest number of snowfall days is December (7.4 days).
Months with the least snowfall days are June, July and August (0 days).

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Average daylight in April /
Average sunshine in April
Flagstaff, AZ

Average daylight in April / Average sunshine in April - Flagstaff, AZ
  • Average daylight in April: 13.1h

The month with the longest days is June (Average daylight: 14.5h).
The month with the shortest days is December (Average daylight: 9.8h).

  • Average sunshine in April: 10.7h

Months with the most sunshine are June and August (Average sunshine: 12.2h).
The month with the least sunshine is December (Average sunshine: 6.8h).

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Average sunshine days in April
Flagstaff, AZ

Average sunshine days in April - Flagstaff, AZ
  • Average sunshine days in April: 22.9 days

The month with the most sunshine days is June (25.8 days).
The month with the least sunshine days is July (11.4 days).

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Average UV index in April
Flagstaff, AZ

Average UV index in April - Flagstaff, AZ
  • Average UV index in April: 4

Months with the highest UV index are June, July and August (UV index 6).
Months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in April
Flagstaff, AZ

Average cloud cover in April - Flagstaff, AZ
  • Average cloud cover in April: 16

The month with the most cloud cover is December (Cloud cover 24).
The month with the least cloud cover is June (Cloud cover 7).

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Average visibility in April
Flagstaff, AZ

Average visibility in April - Flagstaff, AZ
  • Average visibility in April: 6mi

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

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