April weather forecastSaint Peters, MO
April
Weather in April
April's weather in Saint Peters, Missouri boasts the full-blown effects of spring. Its characteristic mild temperatures and longer daylight hours make outdoor activities more enticing. The significant increase in rainfall is apparent, with the amount of rainfall more than doubling to 2.48" (63mm) when compared to the previous month. Consequentially, rain frequents the forecast more often than not. May carries forth the warming streak of April, though with a notable increase in humidity.Temperature
April brings a temperature increase, with average high-temperatures moving from March's cool 54.1°F (12.3°C) to a refreshing 65.3°F (18.5°C). An average nighttime temperature of 47.3°F (8.5°C) is witnessed throughout April.Humidity
In Saint Peters, the average relative humidity in April is 75%.Rainfall
The month with the most rainfall is April, when the rain falls for 13.4 days and typically aggregates up to 2.48" (63mm) of precipitation.Snowfall
In Saint Peters, snow does not fall in April through October.Daylight
In April, the average length of the day is 13h and 14min.On the first day of the month, sunrise is at 6:45 am and sunset at 7:26 pm. On the last day of April, sunrise is at 6:04 am and sunset at 7:54 pm CDT.
Sunshine
In Saint Peters, the average sunshine in April is 8.6h.UV index
In Saint Peters, the average daily maximum UV index in April is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.Note: In April, an average UV index of 5 transforms into the following instructions:
Undertake protective steps - Preventing sun damage is advised. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Saint Peters, MO
- Average high temperature in April: 65.3°F
The warmest month (with the highest average high temperature) is July (87.1°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in April: 47.3°F
The month with the highest average low temperature is July (68.4°F).
The coldest month (with the lowest average low temperature) is January (23.9°F).
Average pressure in April
Saint Peters, MO
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed in April
Saint Peters, MO
- Average wind speed in April: 8.9mph
The windiest month (with the highest average wind speed) is January (9.1mph).
The calmest month (with the lowest average wind speed) is July (5.5mph).
Average humidity in April
Saint Peters, MO
- Average humidity in April: 75%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is October (71%).
Average rainfall in April
Saint Peters, MO
- Average rainfall in April: 2.48"
The wettest month (with the highest rainfall) is April (2.48").
The driest month (with the least rainfall) is February (1.06").
Average rainfall days in April
Saint Peters, MO
- Average rainfall days in April: 13.4 days
The month with the highest number of rainy days is May (15.6 days).
The month with the least rainy days is February (6.7 days).
Average snowfall in April
Saint Peters, MO
- Average snowfall in April: 0"
The month with the highest snowfall is February (1.65").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in April
Saint Peters, MO
- Average snowfall days in April: 0.3 days
The months with the highest number of snowfall days are January and February (5.8 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Saint Peters, MO
- Average daylight in April: 13h and 12min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in April: 8h and 36min
The months with the most sunshine are June and July (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 4h and 42min).
Average sunshine days in April
Saint Peters, MO
- Average sunshine days in April: 15 days
The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is July (12.7 days).
Average UV index in April
Saint Peters, MO
- Average UV index in April: 5
The months with the highest UV index are May, 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
Saint Peters, MO
- Average cloud cover in April: 41
The month with the most cloud cover is January (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 27).
Average visibility in April
Saint Peters, MO
- 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).
