April weather forecast and climate
Thornton, CO

Weather in April

April is a mild spring month in Thornton, Colorado, with average temperature varying between 36.1°F (2.3°C) and 60.3°F (15.7°C).

Temperature

In Thornton, the average high-temperature marginally rises, from a fresh 54.1°F (12.3°C) in March, to a mild 60.3°F (15.7°C). In Thornton, in April, the average low-temperature is 36.1°F (2.3°C).

Humidity

The average relative humidity is 49%.

Rainfall

In Thornton, in April, during 5.3 rainfall days, 0.24" (6mm) of precipitation is typically accumulated. In Thornton, during the entire year, the rain falls for 48.3 days and collects up to 3.19" (81mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Thornton, during April, snow falls for 2.1 days and regularly aggregates up to 0.91" (23mm) of snow. In Thornton, during the entire year, snow falls for 19.6 days, and aggregates up to 8.5" (216mm) of snow.

Daylight

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

Sunshine

In April, the average sunshine in Thornton is 10.9h.

UV index

In April, the average daily maximum UV index is 3. A UV Index estimate of 3 to 5 represents a moderate threat to health from the exposure to the Sun's UV radiation for average individuals.
Note: The daily maximum UV index of 3 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
[Resources]

FAQ

What is the average humidity in April in Thornton?

The average relative humidity in April is 49%.

How much does it rain in Thornton in April?

In Thornton, Colorado, during April, the rain falls for 5.3 days and regularly aggregates up to 0.24" (6mm) of precipitation.

How much does it snow in Thornton in April?

In Thornton, Colorado, in April, snow falls for 2.1 days, with typically accumulated 0.91" (23mm) of snow.

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

The average length of the day in April in Thornton is 13.3h.

How long on average sun shines in April in Thornton?

In April, the average sunshine in Thornton is 10.9h.

What is the UV index intensity in April in Thornton?

The average daily maximum UV index in April in Thornton is 3. A UV Index estimate of 3 to 5 represents a medium hazard to health from the exposure to the Sun's UV rays.

Average temperature in April
Thornton, CO

Average temperature in April - Thornton, CO
  • Average high temperature in April: 60.3°F

The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is December (41.2°F).

  • Average low temperature in April: 36.1°F

The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is December (21.9°F).

[Resources]

Average pressure in April
Thornton, CO

Average pressure in April - Thornton, CO
  • Average pressure in April: 29.91"

The month with the highest atmospheric pressure is January (30.14").
Months with the lowest atmospheric pressure are April and June (29.91").

[Resources]

Average wind speed in April
Thornton, CO

Average wind speed in April - Thornton, CO
  • Average wind speed in April: 6.9mph

The windiest month (with the highest average wind speed) is April (6.9mph).
The calmest month (with the lowest average wind speed) is December (5.8mph).

[Resources]

Average humidity in April
Thornton, CO

Average humidity in April - Thornton, CO
  • Average humidity in April: 49%

The month with the highest relative humidity is February (64%).
The month with the lowest relative humidity is August (39%).

[Resources]

Average rainfall in April
Thornton, CO

Average rainfall in April - Thornton, CO
  • Average rainfall in April: 0.24"

The wettest month (with the highest rainfall) is July (0.59").
The driest months (with the least rainfall) are January and December (0.08").

[Resources]

Average rainfall days in April
Thornton, CO

Average rainfall days in April - Thornton, CO
  • Average rainfall days in April: 5.3 days

The month with the highest number of rainy days is July (8.2 days).
The month with the least rainy days is February (1.2 days).

[Resources]

Average snowfall in April
Thornton, CO

Average snowfall in April - Thornton, CO
  • Average snowfall in April: 0.91"

The month with the highest snowfall is October (1.42").
Months with the least snowfall are June, July, August and September (0").

[Resources]

Average snowfall days in April
Thornton, CO

Average snowfall days in April - Thornton, CO
  • Average snowfall days in April: 2.1 days

The month with the highest number of snowfall days is February (4.7 days).
Months with the least snowfall days are June, July, August and September (0 days).

[Resources]

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

Average daylight in April / Average sunshine in April - Thornton, 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: 10.9h

Months with the most sunshine are June and July (Average sunshine: 11.9h).
The month with the least sunshine is February (Average sunshine: 6.7h).

[Resources]

Average sunshine days in April
Thornton, CO

Average sunshine days in April - Thornton, CO
  • Average sunshine days in April: 22.8 days

The month with the most sunshine days is December (28.5 days).
The month with the least sunshine days is July (19.6 days).

[Resources]

Average UV index in April
Thornton, CO

Average UV index in April - Thornton, CO
  • Average UV index in April: 3

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).

[Resources]

Average cloud cover in April
Thornton, CO

Average cloud cover in April - Thornton, CO
  • Average cloud cover in April: 25

Months with the most cloud cover are February, April and May (Cloud cover 25).
The month with the least cloud cover is September (Cloud cover 14).

[Resources]

Average visibility in April
Thornton, CO

Average visibility in April - Thornton, CO
  • 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).

[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