April weather forecastNorwalk, IA
April
Weather in April
April is a refreshing spring month in Norwalk, Iowa, with temperature in the range of an average low of 42.4°F (5.8°C) and an average high of 59.7°F (15.4°C).Temperature
April's onset brings a temperature rise, moving from a chilly 47.5°F (8.6°C) in March to a moderate 59.7°F (15.4°C). Norwalk's nights in April experience an average temperature drop to a wintry 42.4°F (5.8°C).Humidity
In April, the average relative humidity is 73%.Rainfall
In April, in Norwalk, the rain falls for 13.4 days. Throughout April, 1.46" (37mm) of precipitation is accumulated. Throughout the year, there are 114.4 rainfall days, and 16.38" (416mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Norwalk, during April, snow falls for 1.1 days and regularly aggregates up to 0.35" (9mm) of snow. In Norwalk, Iowa, during the entire year, snow falls for 30.9 days and aggregates up to 7.36" (187mm) of snow.Daylight
In April, the average length of the day is 13h and 22min.On the first day of the month, sunrise is at 6:56 am and sunset at 7:40 pm. On the last day of April, in Norwalk, sunrise is at 6:11 am and sunset at 8:11 pm CDT.
Sunshine
The average sunshine in April in Norwalk, Iowa, is 8h.UV index
In April, the average daily maximum UV index is 4. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: In April, the maximum UV index of 4 suggests this advice:
Undertake precautions - Guarding against sun damage is counselled. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in April
Norwalk, IA
- Average high temperature in April: 59.7°F
The warmest month (with the highest average high temperature) is July (83.1°F).
The month with the lowest average high temperature is January (28.2°F).
- Average low temperature in April: 42.4°F
The month with the highest average low temperature is July (65.5°F).
The coldest month (with the lowest average low temperature) is January (15.1°F).
Average pressure in April
Norwalk, IA
- Average pressure in April: 29.92"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed in April
Norwalk, IA
- Average wind speed in April: 10.3mph
The windiest months (with the highest average wind speed) are January, February, March and April (10.3mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in April
Norwalk, IA
- Average humidity in April: 73%
The months with the highest relative humidity are January and June (82%).
The month with the lowest relative humidity is October (70%).
Average rainfall in April
Norwalk, IA
- Average rainfall in April: 1.46"
The wettest month (with the highest rainfall) is May (2.76").
The driest month (with the least rainfall) is January (0.47").
Average rainfall days in April
Norwalk, IA
- Average rainfall days in April: 13.4 days
The month with the highest number of rainy days is June (15.9 days).
The month with the least rainy days is February (3 days).
Average snowfall in April
Norwalk, IA
- Average snowfall in April: 0.35"
The month with the highest snowfall is January (2.24").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Norwalk, IA
- Average snowfall days in April: 1.1 days
The month with the highest number of snowfall days is January (8.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Norwalk, IA
- Average daylight in April: 13h and 24min
The month with the longest days is June (Average daylight: 15h and 6min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 8h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 4h and 18min).
Average sunshine days in April
Norwalk, IA
- Average sunshine days in April: 15.1 days
The month with the most sunshine days is December (22.3 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in April
Norwalk, IA
- Average UV index in April: 4
The months with the highest UV index are June, July and August (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in April
Norwalk, IA
- Average cloud cover in April: 45
The month with the most cloud cover is January (Cloud cover 54).
The months with the least cloud cover are July and September (Cloud cover 29).
Average visibility in April
Norwalk, IA
- 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).
