April weather forecast
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 an average temperature fluctuating between 37.2°F (2.9°C) and 61.3°F (16.3°C).

Temperature

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

Humidity

The average relative humidity in April 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, in Flagstaff, there are 74.8 rainfall days, and 12.56" (319mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall in Flagstaff, Arizona. 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

The average length of the day in April in Flagstaff is 13h and 6min.
On the first day of April, sunrise is at 6:13 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 7:11 pm MST.

Sunshine

In April, the average sunshine is 10.7h.

UV index

In Flagstaff, the average daily maximum UV index in April is 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 4 in April transform into the following instructions:
Take precautions - Protection against sunburn is recommended. 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?

In April, the average high-temperature is 61.3°F (16.3°C), and the average low-temperature is 37.2°F (2.9°C).

What is the average humidity in April in Flagstaff?

The average relative humidity in April 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 much does it snow in Flagstaff in April?

In Flagstaff, in April, snow falls for 2.4 days, with typically accumulated 2.2" (56mm) of snow.

How many hours of daylight does Flagstaff have in April?

The average day length in April is 13h and 6min.

What time are sunrise and sunset in April in Flagstaff?

On the first day of April in Flagstaff, sunrise is at 6:13 am and sunset at 6:47 pm. On the last day of the month, sunrise is at 5:36 am and sunset at 7:11 pm MST.

How long on average sun shines in April in Flagstaff?

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

What is the UV index reading in April in Flagstaff?

In April, the average daily maximum UV index in Flagstaff is 4. A UV Index value of 3 to 5 symbolizes a moderate health threat from unsafe exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

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).
The 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"Hg

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

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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).
The 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").
The 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).
The 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: 13h and 1min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in April: 10h and 4min

The months with the most sunshine are June and August (Average sunshine: 12h and 12min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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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

The months with the highest UV index are June, July and August (UV index 6).
The 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

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

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