April weather forecastBertram, IA
April
Weather in April
April is a mild spring month in Bertram, Iowa, with an average temperature varying between 57.9°F (14.4°C) and 41°F (5°C).Temperature
April brings an increase in the average high-temperature, progressing from a chilly 45.5°F (7.5°C) in March to a refreshing 57.9°F (14.4°C). An average nighttime temperature of 41°F (5°C) is recorded during April.Humidity
In Bertram, the average relative humidity in April is 75%.Rainfall
In Bertram, during April, the rain falls for 15.9 days and regularly aggregates up to 3.43" (87mm) of precipitation. Throughout the year, there are 147.9 rainfall days, and 31.57" (802mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. April is the last month it regularly snows. During 1.4 snowfall days, in April, Bertram aggregates 0.75" (19mm) of snow. In Bertram, during the entire year, snow falls for 44 days and aggregates up to 18.35" (466mm) of snow.Daylight
In Bertram, the average length of the day in April is 13h and 23min.On the first day of the month, sunrise is at 6:47 am and sunset at 7:32 pm. On the last day of April, sunrise is at 6:02 am and sunset at 8:04 pm CDT.
Sunshine
In Bertram, the average sunshine in April is 7.5h.UV index
In Bertram, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a moderate health risk from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index, 4 during April, leads to the following recommendations:
Adopt protective measures - Suggestions to resist sunburn are offered. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Tightly woven clothing, when worn loosely, shields effectively against the Sun. 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
Bertram, IA
- Average high temperature in April: 57.9°F
The warmest month (with the highest average high temperature) is July (80.2°F).
The month with the lowest average high temperature is January (26.2°F).
- Average low temperature in April: 41°F
The month with the highest average low temperature is July (64.4°F).
The coldest month (with the lowest average low temperature) is January (14.2°F).
Average pressure in April
Bertram, IA
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in April
Bertram, IA
- Average wind speed in April: 10.8mph
The windiest month (with the highest average wind speed) is April (10.8mph).
The calmest months (with the lowest average wind speed) are July and August (7mph).
Average humidity in April
Bertram, IA
- Average humidity in April: 75%
The month with the highest relative humidity is January (85%).
The month with the lowest relative humidity is October (73%).
Average rainfall in April
Bertram, IA
- Average rainfall in April: 3.43"
The wettest month (with the highest rainfall) is May (5").
The driest month (with the least rainfall) is January (1.34").
Average rainfall days in April
Bertram, IA
- Average rainfall days in April: 15.9 days
The month with the highest number of rainy days is May (19 days).
The months with the least rainy days are January and February (5.2 days).
Average snowfall in April
Bertram, IA
- Average snowfall in April: 0.75"
The month with the highest snowfall is January (5.79").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in April
Bertram, IA
- Average snowfall days in April: 1.4 days
The month with the highest number of snowfall days is January (12.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Bertram, IA
- Average daylight in April: 13h and 24min
The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).
- Average sunshine in April: 7h and 30min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in April
Bertram, IA
- Average sunshine days in April: 11.2 days
The month with the most sunshine days is November (17 days).
The month with the least sunshine days is June (8.1 days).
Average UV index in April
Bertram, IA
- Average UV index in April: 4
The month with the highest UV index is July (UV index 6).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in April
Bertram, IA
- Average cloud cover in April: 48
The month with the most cloud cover is January (Cloud cover 58).
The months with the least cloud cover are August and September (Cloud cover 31).
Average visibility in April
Bertram, IA
- Average visibility in April: 6mi
The months with the highest visibility are January, February, March, April, May, June, August, September, October, November and December (6mi).
The month with the lowest visibility is July (5mi).





