April weather forecast
Rochester, IL

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Weather in April

April is a refreshing spring month in Rochester, Illinois, with an average temperature fluctuating between 46.2°F (7.9°C) and 63.1°F (17.3°C).

Temperature

In Rochester, the average high-temperature in April increases from a fresh 51.3°F (10.7°C) in March to a comfortable 63.1°F (17.3°C). An average low-temperature of 46.2°F (7.9°C) is noted during the month of April.

Humidity

The average relative humidity in April is 74%.

Rainfall

April is the month with the most rainfall. Rain falls for 14.1 days and accumulates 2.64" (67mm) of precipitation.

Snowfall

Months with snowfall in Rochester are January through April, November and December. April is the last month it regularly snows in Rochester. During 0.7 snowfall days, in April, Rochester aggregates 0.12" (3mm) of snow. In Rochester, during the entire year, snow falls for 27.9 days and aggregates up to 6.14" (156mm) of snow.

Daylight

In Rochester, Illinois, the average length of the day in April is 13h and 17min.
On the first day of the month, sunrise is at 6:40 am and sunset at 7:22 pm. On the last day of April, sunrise is at 5:58 am and sunset at 7:51 pm CDT.

Sunshine

In Rochester, the average sunshine in April is 8.2h.

UV index

In April, the average daily maximum UV index in Rochester is 4. A UV Index of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: In April, a regular UV index of 4 translates into these guidelines:
Be cautious. Those with fair skin can be subjected to burns in fewer than 30 minutes. To avoid the Sun's strongest rays, limit exposure around the mid-day period. Opt for tightly woven and loose clothing to enhance protection from the Sun. Take to heart! Snow reflection can almost magnify the Sun's UV radiation twofold.
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Frequently asked questions

What is the average April temperature in Rochester?

In Rochester, 63.1°F (17.3°C) is the average high-temperature and 46.2°F (7.9°C) is the average low-temperature during April.

What is the average humidity in April in Rochester?

In April, the average relative humidity in Rochester is 74%.

What is the wettest month in Rochester?

April is the month with the most rainfall in Rochester, Illinois. Rain falls for 14.1 days and accumulates 2.64" (67mm) of precipitation.

How much does it rain in Rochester in April?

In Rochester, Illinois, during April, the rain falls for 14.1 days and regularly aggregates up to 2.64" (67mm) of precipitation.

What is the last month it snows in Rochester?

April is the last month it regularly snows. During 0.7 snowfall days, in April, Rochester aggregates 0.12" (3mm) of snow.

How many hours of daylight does Rochester have in April?

In April, the average day length in Rochester is 13h and 17min.

When are sunrise and sunset in April in Rochester?

In April, on the first day of the month, sunrise is at 6:40 am and sunset at 7:22 pm. On the last day of the month, sunrise is at 5:58 am and sunset at 7:51 pm CDT.

How long on average sun shines in April in Rochester?

In Rochester, Illinois, the average sunshine duration in April is 8.2h.

What is the UV index intensity in April in Rochester?

In April, the average daily maximum UV index in Rochester is 4. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from unprotected exposure to UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in April
Rochester, IL

Average temperature in April - Rochester, IL
  • Average high temperature in April: 63.1°F

The warmest month (with the highest average high temperature) is July (82.8°F).
The month with the lowest average high temperature is January (33.4°F).

  • Average low temperature in April: 46.2°F

The month with the highest average low temperature is July (66°F).
The coldest month (with the lowest average low temperature) is January (21.4°F).

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Average pressure in April
Rochester, IL

Average pressure in April - Rochester, IL
  • Average pressure in April: 29.94"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).

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Average wind speed in April
Rochester, IL

Average wind speed in April - Rochester, IL
  • Average wind speed in April: 10.3mph

The windiest month (with the highest average wind speed) is January (10.4mph).
The calmest months (with the lowest average wind speed) are July and August (6.2mph).

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Average humidity in April
Rochester, IL

Average humidity in April - Rochester, IL
  • Average humidity in April: 74%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is October (70%).

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Average rainfall in April
Rochester, IL

Average rainfall in April - Rochester, IL
  • Average rainfall in April: 2.64"

The wettest month (with the highest rainfall) is April (2.64").
The driest month (with the least rainfall) is December (1.14").

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Average rainfall days in April
Rochester, IL

Average rainfall days in April - Rochester, IL
  • Average rainfall days in April: 14.1 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is February (6.2 days).

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Average snowfall in April
Rochester, IL

Average snowfall in April - Rochester, IL
  • Average snowfall in April: 0.12"

The month with the highest snowfall is February (1.85").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in April
Rochester, IL

Average snowfall days in April - Rochester, IL
  • Average snowfall days in April: 0.7 days

The month with the highest number of snowfall days is January (8.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

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Average daylight in April /
Average sunshine in April
Rochester, IL

Average daylight in April / Average sunshine in April - Rochester, IL
  • Average daylight in April: 13h and 2min

The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 24min).

  • Average sunshine in April: 8h and 1min

The month with the most sunshine is June (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 4h and 12min).

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Average sunshine days in April
Rochester, IL

Average sunshine days in April - Rochester, IL
  • Average sunshine days in April: 12.3 days

The month with the most sunshine days is October (18.7 days).
The month with the least sunshine days is July (11 days).

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Average UV index in April
Rochester, IL

Average UV index in April - Rochester, IL
  • Average UV index in April: 4

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).

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Average cloud cover in April
Rochester, IL

Average cloud cover in April - Rochester, IL
  • Average cloud cover in April: 44

The month with the most cloud cover is January (Cloud cover 55).
The month with the least cloud cover is June (Cloud cover 29).

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Average visibility in April
Rochester, IL

Average visibility in April - Rochester, IL
  • Average visibility in April: 6mi

The months with the highest visibility are January, February, March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are July and August (5mi).

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Rochester, Illinois, USA

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