April weather forecastJohnstown, CO
April
Weather in April
In April, Johnstown witnesses a more pronounced shift towards spring, with temperatures climbing to an average high of 60.8°F (16°C). This month also offers the greatest visibility throughout the year at 6 miles, accompanied by a lower wind speed of 7.3mph (11.7km/h). Increasingly, spring showers bring blooming flowers, ushering in a mood of warmth and rejuvenation. The recurrent patterns of rain and sunshine create a picturesque setting, offering plenty of photo opportunities.Temperature
With the onset of April, Johnstown's average high-temperature experiences a slight rise, moving from March's fresh 54.1°F (12.3°C) to a refreshing 60.8°F (16°C). Contrasted against daytime highs, Johnstown records an average nighttime low of 37.2°F (2.9°C) in April.Humidity
The average relative humidity in April in Johnstown is 49%.Rainfall
In Johnstown, in April, during 12.8 rainfall days, 1.3" (33mm) of precipitation is typically accumulated. Throughout the year, there are 107.4 rainfall days, and 11.3" (287mm) of precipitation is accumulated.Snowfall
Months with snowfall in Johnstown are January through May, October through December. In Johnstown, in April, snow falls for 3.5 days, with typically accumulated 3.74" (95mm) of snow. In Johnstown, during the entire year, snow falls for 41 days and aggregates up to 25.51" (648mm) of snow.Daylight
The average length of the day in April is 13h and 19min.On the first day of the month, sunrise is at 6:41 am and sunset at 7:24 pm. On the last day of April, in Johnstown, sunrise is at 5:59 am and sunset at 7:54 pm MDT.
Sunshine
The average sunshine in April is 10.7h.UV index
In Johnstown, the average daily maximum UV index in April is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum daily UV index of 3 during April morphs into the following directions:
Be mindful. Individuals with a lighter skin tone may suffer burns in less than 30 minutes. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Johnstown, CO
- Average high temperature in April: 60.8°F
The warmest month (with the highest average high temperature) is July (88.7°F).
The month with the lowest average high temperature is December (39.4°F).
- Average low temperature in April: 37.2°F
The month with the highest average low temperature is July (61.3°F).
The coldest month (with the lowest average low temperature) is December (20.7°F).
Average pressure in April
Johnstown, CO
- 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 (29.89"Hg).
Average wind speed in April
Johnstown, CO
- Average wind speed in April: 7.3mph
The windiest month (with the highest average wind speed) is April (7.3mph).
The calmest month (with the lowest average wind speed) is December (5.5mph).
Average humidity in April
Johnstown, CO
- Average humidity in April: 49%
The months with the highest relative humidity are January, February and December (63%).
The months with the lowest relative humidity are August and September (42%).
Average rainfall in April
Johnstown, CO
- Average rainfall in April: 1.3"
The wettest month (with the highest rainfall) is May (2.13").
The driest months (with the least rainfall) are January and December (0.39").
Average rainfall days in April
Johnstown, CO
- Average rainfall days in April: 12.8 days
The month with the highest number of rainy days is May (14.3 days).
The month with the least rainy days is November (3.7 days).
Average snowfall in April
Johnstown, CO
- Average snowfall in April: 3.74"
The month with the highest snowfall is February (4.53").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Johnstown, CO
- Average snowfall days in April: 3.5 days
The month with the highest number of snowfall days is February (9.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Johnstown, CO
- Average daylight in April: 13h and 18min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).
- Average sunshine in April: 10h and 42min
The month with the most sunshine is June (Average sunshine: 11h and 54min).
The month with the least sunshine is February (Average sunshine: 6h and 42min).
Average sunshine days in April
Johnstown, CO
- Average sunshine days in April: 12.8 days
The month with the most sunshine days is January (22.4 days).
The month with the least sunshine days is July (11.4 days).
Average UV index in April
Johnstown, CO
- Average UV index in April: 3
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).
Average cloud cover in April
Johnstown, CO
- Average cloud cover in April: 27
The month with the most cloud cover is April (Cloud cover 27).
The months with the least cloud cover are June and September (Cloud cover 16).
Average visibility in April
Johnstown, CO
- 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).
