April weather forecast and climate
Granby, CO

Weather in April

April, like March, in Granby, Colorado, is a wintry spring month, with average temperature fluctuating between 19.2°F (-7.1°C) and 40.1°F (4.5°C).

Temperature

In April, the average high-temperature marginally rises, from a wintry 33.6°F (0.9°C) in March, to a still cold 40.1°F (4.5°C). In Granby, in April, the average low-temperature is 19.2°F (-7.1°C).

Humidity

In April, the average relative humidity is 76%.

Rainfall

In Granby, during 8.7 rainfall days, 1.54" (39mm) of precipitation is typically accumulated. In Granby, during the entire year, the rain falls for 96.3 days and collects up to 11.54" (293mm) of precipitation.

Snowfall

Months with snowfall are January through June, August through December. April is the month with the most snowfall in Granby. Snow falls for 15.1 days and accumulates 10.94" (278mm) of snow.

Daylight

The average length of the day in Granby is 13.3h.

Sunshine

In April, the average sunshine is 10h.

UV index

Months with the lowest UV index in Granby are January through April, October through December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to the Sun's UV rays for average individuals.
Note: The daily maximum UV index of 2 in April interpret into the following advice:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in April in Granby?

In April, the average high-temperature is 40.1°F (4.5°C), and the average low-temperature is 19.2°F (-7.1°C).

What is the average humidity in April in Granby?

In April, the average relative humidity in Granby, Colorado, is 76%.

How much does it rain in Granby in April?

In Granby, Colorado, in April, during 8.7 rainfall days, 1.54" (39mm) of precipitation is typically accumulated.

How much does it snow in Granby in April?

In Granby, in April, snow falls for 15.1 days, with typically accumulated 10.94" (278mm) of snow.

When does it snow the most in Granby?

April is the month with the most snowfall in Granby. Snow falls for 15.1 days and accumulates 10.94" (278mm) of snow.

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

The average length of the day in April in Granby, Colorado, is 13.3h.

How many hours of sunshine does Granby have in April?

In April, the average sunshine in Granby is 10h.

What is the month with the lowest UV index in Granby?

Months with the lowest UV index in Granby are January through April, October through December, with an average maximum UV index of 2.

What is the UV index intensity in April in Granby?

In Granby, the average daily maximum UV index in April is 2. A UV Index of 2, and less, symbolizes a low health threat from unsafe exposure to the Sun's UV rays.

Average temperature in April
Granby, CO

Average temperature in April - Granby, CO
  • Average high temperature in April: 40.1°F

The warmest month (with the highest average high temperature) is July (72.3°F).
The month with the lowest average high temperature is December (24.6°F).

  • Average low temperature in April: 19.2°F

The month with the highest average low temperature is July (43.7°F).
The coldest month (with the lowest average low temperature) is January (4.3°F).

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Average pressure in April
Granby, CO

Average pressure in April - Granby, CO
  • Average pressure in April: 29.93"

The month with the highest atmospheric pressure is January (30.19").
Months with the lowest atmospheric pressure are April, May and June (29.93").

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Average wind speed in April
Granby, CO

Average wind speed in April - Granby, CO
  • Average wind speed in April: 6.7mph

The windiest month (with the highest average wind speed) is February (7mph).
The calmest month (with the lowest average wind speed) is August (5mph).

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Average humidity in April
Granby, CO

Average humidity in April - Granby, CO
  • Average humidity in April: 76%

The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is June (49%).

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Average rainfall in April
Granby, CO

Average rainfall in April - Granby, CO
  • Average rainfall in April: 1.54"

The wettest month (with the highest rainfall) is May (1.73").
The driest month (with the least rainfall) is August (0.55").

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Average rainfall days in April
Granby, CO

Average rainfall days in April - Granby, CO
  • Average rainfall days in April: 8.7 days

The month with the highest number of rainy days is May (12.8 days).
The month with the least rainy days is October (4.9 days).

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Average snowfall in April
Granby, CO

Average snowfall in April - Granby, CO
  • Average snowfall in April: 10.94"

The month with the highest snowfall is April (10.94").
The month with the least snowfall is July (0").

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Average snowfall days in April
Granby, CO

Average snowfall days in April - Granby, CO
  • Average snowfall days in April: 15.1 days

The month with the highest number of snowfall days is February (16.1 days).
The month with the least snowfall days is July (0 days).

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Average daylight in April /
Average sunshine in April
Granby, CO

Average daylight in April / Average sunshine in April - Granby, CO
  • Average daylight in April: 13.3h

The month with the longest days is June (Average daylight: 15h).
The month with the shortest days is December (Average daylight: 9.4h).

  • Average sunshine in April: 10h

Months with the most sunshine are July and August (Average sunshine: 11.8h).
The month with the least sunshine is February (Average sunshine: 6.2h).

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Average sunshine days in April
Granby, CO

Average sunshine days in April - Granby, CO
  • Average sunshine days in April: 9.9 days

Months with the most sunshine days are September and November (19.5 days).
The month with the least sunshine days is May (9.5 days).

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Average UV index in April
Granby, CO

Average UV index in April - Granby, CO
  • Average UV index in April: 2

Months with the highest UV index are June, July and August (UV index 4).
Months with the lowest UV index are January, February, March, April, October, November and December (UV index 2).

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Average cloud cover in April
Granby, CO

Average cloud cover in April - Granby, CO
  • Average cloud cover in April: 35

The month with the most cloud cover is February (Cloud cover 41).
The month with the least cloud cover is September (Cloud cover 15).

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Average visibility in April
Granby, CO

Average visibility in April - Granby, CO
  • Average visibility in April: 5mi

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

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