Monthly weather forecast and climate
Galena, IL

Bright brown and golden trees near a calm river, bridge, and the colorful town of Galena, Illinois,
Bright brown and golden trees near a calm river, bridge, and the colorful town of Galena, Illinois,

Weather in January

January, the same as December, in Galena, Illinois, is another subzero cold winter month, with average temperature ranging between max 25°F (-3.9°C) and min 12.4°F (-10.9°C). The coldest month is January, with an average high-temperature of 25°F (-3.9°C) and an average low-temperature of 12.4°F (-10.9°C). Weather in January »

Weather in February

February, the last month of the winter, in Galena, is also a subzero cold month, with average temperature ranging between min 15.8°F (-9°C) and max 28.9°F (-1.7°C). In Galena, Illinois, the average high-temperature in February is relatively the same as in January - a still subzero cold 28.9°F (-1.7°C). Weather in February »

Weather in March

The first month of the spring, March, is a frosty month in Galena, Illinois, with average temperature fluctuating between 28.8°F (-1.8°C) and 43.7°F (6.5°C). In Galena, the average high-temperature in March increases considerably, from a freezing cold 28.9°F (-1.7°C) in February, to a frosty 43.7°F (6.5°C). Weather in March »

Weather in April

April in Galena, Illinois, is a moderate spring month, with average temperature ranging between max 56.1°F (13.4°C) and min 39°F (3.9°C). In Galena, Illinois, the average high-temperature in April increases, from a chilly 43.7°F (6.5°C) in March, to a mild 56.1°F (13.4°C). Weather in April »

Weather in May

May, the last month of the spring, in Galena, is an enjoyable month, with average temperature ranging between min 50.2°F (10.1°C) and max 67.6°F (19.8°C). In Galena, the average high-temperature rises, from a mild 56.1°F (13.4°C) in April, to an enjoyable 67.6°F (19.8°C). Weather in May »

Weather in June

June, the first month of the summer, in Galena, is a warm month, with average temperature varying between 59.4°F (15.2°C) and 76.6°F (24.8°C). In June, the average high-temperature increases, from a comfortable 67.6°F (19.8°C) in May, to a moderately hot 76.6°F (24.8°C). Weather in June »

Weather in July

July, the same as June, is another warm summer month in Galena, Illinois, with average temperature ranging between max 79.7°F (26.5°C) and min 63°F (17.2°C). The warmest month is July, with an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 63°F (17.2°C). Weather in July »

Weather in August

August, the last month of the summer, in Galena, is another warm month, with average temperature ranging between max 78.6°F (25.9°C) and min 60.4°F (15.8°C). In August, the average high-temperature is relatively the same as in July - a still moderately hot 78.6°F (25.9°C). Weather in August »

Weather in September

September, the first month of the autumn, in Galena, is also an agreeable month, with average temperature fluctuating between 73°F (22.8°C) and 53.1°F (11.7°C). In Galena, the average high-temperature in September marginally drops, from a warm 78.6°F (25.9°C) in August, to a pleasant 73°F (22.8°C). Weather in September »

Weather in October

October, like September, is a moderate autumn month in Galena, Illinois, with average temperature ranging between min 42.4°F (5.8°C) and max 58.3°F (14.6°C). In Galena, the average high-temperature in October plummets, from a pleasant 73°F (22.8°C) in September, to a mild 58.3°F (14.6°C). Weather in October »

Weather in November

The last month of the autumn, November, is another chilly month in Galena, Illinois, with temperature in the range of an average low of 30.6°F (-0.8°C) and an average high of 44.2°F (6.8°C). In November, the average high-temperature drops, from a mild 58.3°F (14.6°C) in October, to a frosty 44.2°F (6.8°C). Weather in November »

Weather in December

The first month of the winter, December, is still a freezing cold month in Galena, Illinois, with average temperature varying between 31.8°F (-0.1°C) and 21.4°F (-5.9°C). In Galena, the average high-temperature decreases, from a frosty 44.2°F (6.8°C) in November, to a freezing cold 31.8°F (-0.1°C). Weather in December »
[Resources]

FAQ

What is the coldest month in Galena?

With an average high-temperature of 25°F (-3.9°C) and an average low-temperature of 12.4°F (-10.9°C), January is the coldest month in Galena, Illinois.

What is the most humid month in Galena?

January is the most humid month in Galena, Illinois, with an average relative humidity of 87%.

How much does it rain in Galena?

Throughout the year, there are 153.1 rainfall days, and 30.75" (781mm) of precipitation is accumulated.

What is the driest month in Galena?

January is the month with the least rainfall in Galena. Rain falls for 5.4 days and accumulates 1.26" (32mm) of precipitation.

When does it snow in Galena?

January through April, October through December are months with snowfall.

How many days does it snow in Galena?

In Galena, during the entire year, snow falls for 46.9 days, and aggregates up to 17.52" (445mm) of snow.

What is the snowiest month in Galena?

January is the month with the most snowfall in Galena. Snow falls for 13.2 days and accumulates 5.12" (130mm) of snow.

What is the month with the least sunshine in Galena?

With an average of 3.7h of sunshine, January has the least sunshine of the year in Galena.

What is the month with the lowest UV index in Galena?

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

What are the least humid months in Galena?

Months with the lowest humidity in Galena are April and October, with an average relative humidity of 76%.

When it does not snow in Galena?

In Galena snow does not fall in May through September.

What is the rainiest month in Galena?

The month with the most rainfall in Galena is June when the rain falls for 19.5 days and typically aggregates up to 4.29" (109mm) of precipitation.

When are the longest days in Galena?

With an average of 15.2h of daylight, June has the longest days of the year in Galena.

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

Months with the highest UV index in Galena, Illinois, are June and July, with an average maximum UV index of 6.

What is the warmest month in Galena?

With an average high-temperature of 79.7°F (26.5°C) and an average low-temperature of 63°F (17.2°C), July is the warmest month.

What month has the most sunshine in Galena?

The month with the most sunshine is August, with an average of 9.8h of sunshine.

What is the month with the shortest days in Galena?

The month with the shortest days is December, with an average of 9.1h of daylight.

Average pressure
Galena, IL

Average pressure - Galena, IL

The month with the highest atmospheric pressure is January (30.12").
The month with the lowest atmospheric pressure is June (29.9").

[Resources]

Average wind speed
Galena, IL

Average wind speed - Galena, IL

The windiest month (with the highest average wind speed) is April (10.4mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).

[Resources]

Average humidity
Galena, IL

Average humidity - Galena, IL

The month with the highest relative humidity is January (87%).
Months with the lowest relative humidity are April and October (76%).

[Resources]

Average rainfall
Galena, IL

Average rainfall - Galena, IL

The wettest month (with the highest rainfall) is June (4.29").
The driest month (with the least rainfall) is January (1.26").

[Resources]

Average rainfall days
Galena, IL

Average rainfall days - Galena, IL

The month with the highest number of rainy days is May (20 days).
The month with the least rainy days is February (4.8 days).

[Resources]

Average snowfall
Galena, IL

Average snowfall - Galena, IL

The month with the highest snowfall is January (5.12").
Months with the least snowfall are May, June, July, August and September (0").

[Resources]

Average snowfall days
Galena, IL

Average snowfall days - Galena, IL

The month with the highest number of snowfall days is January (13.2 days).
Months with the least snowfall days are May, June, July, August and September (0 days).

[Resources]

Average daylight / Average sunshine
Galena, IL

Average daylight / Average sunshine - Galena, IL

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

The month with the most sunshine is August (Average sunshine: 9.8h).
The month with the least sunshine is January (Average sunshine: 3.7h).

[Resources]

Average sunshine days
Galena, IL

Average sunshine days - Galena, IL

The month with the most sunshine days is November (17.1 days).
The month with the least sunshine days is June (7.9 days).

[Resources]

Average visibility
Galena, IL

Average visibility - Galena, IL

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

[Resources]