Galena
Illinois, USA
Long-term weather forecast
Long-term weather forecast

Monthly weather forecast and climate
Galena, IL

Taken in the fall is this glorious view of bright brown and golden trees near a calm river, bridge, and the colorful town of Galena, Illinois
Taken in the fall is this glorious view of bright brown and golden trees near a calm river, bridge, and the colorful town of Galena, Illinois
January, the same as December, in Galena, Illinois, is another subzero cold winter month, with average temperature varying between 10°F (-12.2°C) and 28°F (-2.2°C). The coldest month is January, with an average high-temperature of 28°F (-2.2°C) and an average low-temperature of 10°F (-12.2°C). Weather in January »
The last month of the winter, February, is a cold month in Galena, Illinois, with average temperature ranging between min 14°F (-10°C) and max 34°F (1.1°C). In Galena, the average high-temperature in February marginally rises, from a subzero cold 28°F (-2.2°C) in January, to a cold 34°F (1.1°C). Weather in February »

The first month of the spring, March, is a frosty month in Galena, Illinois, with average temperature ranging between max 45°F (7.2°C) and min 25°F (-3.9°C). In March, the average high-temperature rises, from a wintry 34°F (1.1°C) in February, to a frosty 45°F (7.2°C). Weather in March »

April in Galena, Illinois, is a moderate spring month, with average temperature varying between 36°F (2.2°C) and 60.1°F (15.6°C). In April, the average high-temperature increases considerably, from a chilly 45°F (7.2°C) in March, to a mild 60.1°F (15.6°C). Weather in April »

May, the last month of the spring, in Galena, is a pleasant month, with average temperature varying between 70°F (21.1°C) and 46°F (7.8°C). In May, the average high-temperature increases, from a moderate 60.1°F (15.6°C) in April, to a pleasant 70°F (21.1°C). Weather in May »

The first month of the summer, June, is a warm month in Galena, Illinois, with average temperature ranging between max 80.1°F (26.7°C) and min 55.9°F (13.3°C). In June, the average high-temperature rises, from an agreeable 70°F (21.1°C) in May, to a moderately hot 80.1°F (26.7°C). Weather in June »

July, like June, in Galena, Illinois, is a moderately hot summer month, with temperature in the range of an average low of 60.1°F (15.6°C) and an average high of 82.9°F (28.3°C). The warmest month is July, with an average high-temperature of 82.9°F (28.3°C) and an average low-temperature of 60.1°F (15.6°C). Weather in July »

August, the last month of the summer, in Galena, is also a moderately hot month, with average temperature varying between 82°F (27.8°C) and 57.9°F (14.4°C). In Galena, the average high-temperature in August is relatively the same as in July - a still moderately hot 82°F (27.8°C). Weather in August »

September, the first month of the autumn, in Galena, is still a warm month, with average temperature varying between 73.9°F (23.3°C) and 48°F (8.9°C). In Galena, the average high-temperature marginally drops, from 82°F (27.8°C) in August, to a still warm 73.9°F (23.3°C). Weather in September »

October, the same as September, is another comfortable autumn month in Galena, Illinois, with temperature in the range of an average high of 62.1°F (16.7°C) and an average low of 37°F (2.8°C). In Galena, the average high-temperature in October drops, from a moderately hot 73.9°F (23.3°C) in September, to an enjoyable 62.1°F (16.7°C). Weather in October »

The last month of the autumn, November, is another chilly month in Galena, Illinois, with temperature in the range of an average low of 27°F (-2.8°C) and an average high of 46.9°F (8.3°C). In November, the average high-temperature declines considerably, from an enjoyable 62.1°F (16.7°C) in October, to a chilly 46.9°F (8.3°C). Weather in November »

The first month of the winter, December, is also a wintry month in Galena, Illinois, with average temperature varying between 33.1°F (0.6°C) and 15.1°F (-9.4°C). In Galena, Illinois, the average high-temperature decreases, from a chilly 46.9°F (8.3°C) in November, to a cold 33.1°F (0.6°C). Weather in December »

What is the coldest month in Galena?

January is the coldest month in Galena, with an average high-temperature of 28°F (-2.2°C) and an average low-temperature of 10°F (-12.2°C).

How many days does it rain in Galena?

In Galena, Illinois, during the entire year, the rain falls for 117 days and collects up to 36.7" (933.4mm) of precipitation.

What is the driest month in Galena?

The month with the least rainfall is January when the rain falls for 9 days and typically collects 1.1" (28.7mm) of precipitation.

When is the lowest UV index in Galena?

January and December, with an average maximum UV index of 1, are months with the lowest UV index.

What are the months with the most sunshine in Galena?

Months with the most sunshine in Galena, Illinois, are May through August, with an average of 10h of sunshine.

What is the wettest month in Galena?

June is the month with the most rainfall in Galena, Illinois. Rain falls for 10 days and accumulates 5" (127mm) of precipitation.

When are the longest days in Galena?

June has the longest days of the year, with an average of 15.2h of daylight.

What are the months with the highest UV index in Galena?

June and July, with an average maximum UV index of 9, are months with the highest UV index.

What is the warmest month in Galena?

July is the warmest month in Galena, Illinois, with an average high-temperature of 82.9°F (28.3°C) and an average low-temperature of 60.1°F (15.6°C).

What is the month with the least sunshine in Galena?

Months with the least sunshine in Galena are November and December, with an average of 4h of sunshine.

What is the month with the shortest days in Galena?

With an average of 9.1h of daylight, December has the shortest days of the year in Galena.
Average rainfall days - Galena, IL
Average daylight / Average sunshine - Galena, IL

The month with the longest days is June (Average daylight: 15.2h).
The month with shortest days is December (Average daylight: 9.1h).

Months with most sunshine are May, June, July and August (Average sunshine: 10h).
Months with least sunshine are November and December (Average sunshine: 4).