April weather forecastIllmo, MO
April
Weather in April
April is a refreshing spring month in Illmo, Missouri, with an average temperature ranging between min 49.8°F (9.9°C) and max 67.1°F (19.5°C).Temperature
April's arrival is marked by an increase in the average high-temperature, moving from a moderate 56.3°F (13.5°C) in March to a comfortable 67.1°F (19.5°C). Illmo usually reports an average low-temperature of 49.8°F (9.9°C) during the month of April.Humidity
In April, the average relative humidity is 77%.Rainfall
The month with the most rainfall is April, when the rain falls for 15.3 days and typically aggregates up to 4.33" (110mm) of precipitation.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows in Illmo. During 0.1 snowfall days, in April, Illmo aggregates 0.04" (1mm) of snow. In Illmo, during the entire year, snow falls for 11.2 days and aggregates up to 4.92" (125mm) of snow.Daylight
The average length of the day in April is 13h and 11min.On the first day of the month, sunrise is at 6:42 am and sunset at 7:21 pm. On the last day of April, sunrise is at 6:03 am and sunset at 7:46 pm CDT.
Sunshine
The average sunshine in April is 8.7h.UV index
The average daily maximum UV index in April is 5. A UV Index of 3 to 5 symbolizes a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: The UV index of 5 during April leads to these advisories:
Take measures. Individuals with light skin might experience burns in under 30 minutes. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. 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
Illmo, MO
- Average high temperature in April: 67.1°F
The warmest month (with the highest average high temperature) is July (88.3°F).
The month with the lowest average high temperature is January (41°F).
- Average low temperature in April: 49.8°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27.9°F).
Average pressure in April
Illmo, MO
- Average pressure in April: 29.96"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in April
Illmo, MO
- Average wind speed in April: 8.9mph
The windiest months (with the highest average wind speed) are January and February (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).
Average humidity in April
Illmo, MO
- Average humidity in April: 77%
The months with the highest relative humidity are March and May (78%).
The month with the lowest relative humidity is October (69%).
Average rainfall in April
Illmo, MO
- Average rainfall in April: 4.33"
The wettest month (with the highest rainfall) is April (4.33").
The driest month (with the least rainfall) is September (1.5").
Average rainfall days in April
Illmo, MO
- Average rainfall days in April: 15.3 days
The month with the highest number of rainy days is July (17 days).
The month with the least rainy days is January (9.8 days).
Average snowfall in April
Illmo, MO
- Average snowfall in April: 0.04"
The month with the highest snowfall is February (2.17").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Illmo, MO
- Average snowfall days in April: 0.1 days
The month with the highest number of snowfall days is January (3.7 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
Illmo, MO
- Average daylight in April: 13h and 12min
The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in April: 8h and 42min
The month with the most sunshine is June (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in April
Illmo, MO
- Average sunshine days in April: 13.1 days
The month with the most sunshine days is October (18.6 days).
The month with the least sunshine days is July (11.9 days).
Average UV index in April
Illmo, 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 and December (UV index 2).
Average cloud cover in April
Illmo, MO
- Average cloud cover in April: 40
The month with the most cloud cover is February (Cloud cover 48).
The months with the least cloud cover are June, August and September (Cloud cover 27).
Average visibility in April
Illmo, 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).
