Contents
- Weather in April
- Frequently asked questions
- Average temperature in April
- Average pressure in April
- Average wind speed in April
- Average humidity in April
- Average rainfall in April
- Average rainfall days in April
- Average snowfall in April
- Average snowfall days in April
- Average daylight in April
- Average sunshine in April
- Average sunshine days in April
- Average UV index in April
- Average cloud cover in April
- Average visibility in April
Weather in April
Temperature
With the arrival of April, the average high-temperature transitions from a frosty 45.7°F (7.6°C) in March to a mild 58.3°F (14.6°C). Hartwick records an average nighttime low-temperature of 41.5°F (5.3°C) throughout April.Humidity
In Hartwick, the average relative humidity in April is 74%.Rainfall
In Hartwick, Iowa, during April, the rain falls for 14.5 days and regularly aggregates up to 2.91" (74mm) of precipitation. Throughout the year, in Hartwick, there are 135.6 rainfall days, and 27.48" (698mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In April, it is snowing for 1.4 days. Throughout April, 0.59" (15mm) of snow is accumulated. In Hartwick, Iowa, during the entire year, snow falls for 35.5 days and aggregates up to 13.98" (355mm) of snow.Daylight
In Hartwick, the average length of the day in April is 13h and 22min.On the first day of the month, sunrise is at 6:50 am and sunset at 7:35 pm. On the last day of April, sunrise is at 6:05 am and sunset at 8:07 pm CDT.
Sunshine
In April, the average sunshine in Hartwick is 7.8h.UV index
In Hartwick, Iowa, the average daily maximum UV index in April is 4. A UV Index reading of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for the average person.Note: In April, a regular UV index of 4 translates into these guidelines:
Put precautions into practice - Ensuring skin and eye safety is a necessity. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Frequently asked questions
What is the average April temperature in Hartwick?
What is the average humidity in April in Hartwick?
How many days does it rain in April in Hartwick?
How many days does it snow in April in Hartwick?
What is the average length of the day in April in Hartwick?
When is the sunrise / sunset in April in Hartwick?
How long on average sun shines in April in Hartwick?
What is the UV index reading in April in Hartwick?
Average temperature in April
Hartwick, IA
- Average high temperature in April: 58.3°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (27°F).
- Average low temperature in April: 41.5°F
The month with the highest average low temperature is July (64.8°F).
The coldest month (with the lowest average low temperature) is January (13.6°F).
Average pressure in April
Hartwick, IA
- Average pressure in April: 29.93"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in April
Hartwick, IA
- Average wind speed in April: 10.7mph
The windiest months (with the highest average wind speed) are January and April (10.7mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in April
Hartwick, IA
- Average humidity in April: 74%
The months with the highest relative humidity are January, February and July (84%).
The month with the lowest relative humidity is October (72%).
Average rainfall in April
Hartwick, IA
- Average rainfall in April: 2.91"
The wettest month (with the highest rainfall) is May (4.21").
The driest month (with the least rainfall) is January (1.02").
Average rainfall days in April
Hartwick, IA
- Average rainfall days in April: 14.5 days
The month with the highest number of rainy days is May (17.3 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in April
Hartwick, IA
- Average snowfall in April: 0.59"
The month with the highest snowfall is January (4.49").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in April
Hartwick, IA
- Average snowfall days in April: 1.4 days
The month with the highest number of snowfall days is January (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in April /
Average sunshine in April
Hartwick, IA
- Average daylight in April: 13h and 2min
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 5min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in April
Hartwick, IA
- Average sunshine days in April: 12.9 days
The month with the most sunshine days is December (18.5 days).
The month with the least sunshine days is June (10.8 days).
Average UV index in April
Hartwick, IA
- Average UV index in April: 4
The months with the highest UV index are June and July (UV index 6).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in April
Hartwick, IA
- Average cloud cover in April: 47
The month with the most cloud cover is January (Cloud cover 56).
The months with the least cloud cover are August and September (Cloud cover 30).
Average visibility in April
Hartwick, IA
- Average visibility in April: 6mi
The months with the highest visibility are February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, July and August (5mi).
Hartwick, Iowa, USA
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