April weather forecastSaint Johns, MT
April
Weather in April
April is a fresh spring month in Saint Johns, Montana, with an average temperature varying between 53.2°F (11.8°C) and 36.3°F (2.4°C).Temperature
April brings a temperature increase, with average high-temperatures moving from March's wintry 39.7°F (4.3°C) to a fresh 53.2°F (11.8°C). Saint Johns experiences an average low-temperature of 36.3°F (2.4°C) in the month of April.Humidity
The average relative humidity in April is 59%.Rainfall
In Saint Johns, in April, during 11.3 rainfall days, 0.71" (18mm) of precipitation is typically accumulated. In Saint Johns, during the entire year, the rain falls for 98.7 days and collects up to 8.23" (209mm) of precipitation.Snowfall
January through May, September through December are months with snowfall. In Saint Johns, in April, during 4.5 snowfall days, 1.46" (37mm) of snow is typically accumulated. In Saint Johns, during the entire year, snow falls for 53.5 days and aggregates up to 14.25" (362mm) of snow.Daylight
In Saint Johns, the average length of the day in April is 13h and 44min.On the first day of the month, sunrise is at 6:55 am and sunset at 7:51 pm. On the last day of April, sunrise is at 5:59 am and sunset at 8:34 pm MDT.
Sunshine
The average sunshine in April is 9.5h.UV index
In Saint Johns, the average daily maximum UV index in April is 3. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for average individuals.Note: A daily maximum UV index of 3 in April translates into the following instructions:
Heed the precautions - It is counselled to guard against solar damage. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Saint Johns, MT
- Average high temperature in April: 53.2°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 (27.1°F).
- Average low temperature in April: 36.3°F
The month with the highest average low temperature is August (61.3°F).
The coldest month (with the lowest average low temperature) is February (13.5°F).
Average pressure in April
Saint Johns, MT
- Average pressure in April: 29.92"Hg
The months with the highest atmospheric pressure are January and February (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.84"Hg).
Average wind speed in April
Saint Johns, MT
- Average wind speed in April: 10.6mph
The windiest month (with the highest average wind speed) is April (10.6mph).
The calmest month (with the lowest average wind speed) is August (8.5mph).
Average humidity in April
Saint Johns, MT
- Average humidity in April: 59%
The month with the highest relative humidity is January (83%).
The month with the lowest relative humidity is August (40%).
Average rainfall in April
Saint Johns, MT
- Average rainfall in April: 0.71"
The wettest month (with the highest rainfall) is June (1.5").
The driest month (with the least rainfall) is December (0.31").
Average rainfall days in April
Saint Johns, MT
- Average rainfall days in April: 11.3 days
The month with the highest number of rainy days is May (13.8 days).
The month with the least rainy days is February (4 days).
Average snowfall in April
Saint Johns, MT
- Average snowfall in April: 1.46"
The month with the highest snowfall is February (2.72").
The months with the least snowfall are June, July and August (0").
Average snowfall days in April
Saint Johns, MT
- Average snowfall days in April: 4.5 days
The month with the highest number of snowfall days is February (11 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in April /
Average sunshine in April
Saint Johns, MT
- Average daylight in April: 13h and 42min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 18min).
- Average sunshine in April: 9h and 30min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 18min).
Average sunshine days in April
Saint Johns, MT
- Average sunshine days in April: 12.8 days
The month with the most sunshine days is September (20.3 days).
The month with the least sunshine days is April (12.8 days).
Average UV index in April
Saint Johns, MT
- Average UV index in April: 3
The month with the highest UV index is July (UV index 6).
The months with the lowest UV index are January, February, March, October, November and December (UV index 2).
Average cloud cover in April
Saint Johns, MT
- Average cloud cover in April: 39
The month with the most cloud cover is February (Cloud cover 46).
The months with the least cloud cover are July and August (Cloud cover 16).
Average visibility in April
Saint Johns, MT
- 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).
