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Contents
- Weather in January
- Weather in February
- Weather in March
- Weather in April
- Weather in May
- Weather in June
- Weather in July
- Weather in August
- Weather in September
- Weather in October
- Weather in November
- Weather in December
- Frequently asked questions
- Average temperature
- Average pressure
- Average wind speed
- Average humidity
- Average rainfall
- Average rainfall days
- Average snowfall
- Average snowfall days
- Average daylight
- Average sunshine
- Average sunshine days
- Average UV index
- Average cloud cover
- Average visibility
Climate and monthly weather forecast
Weather in January
January, like December, is another subzero cold winter month in Rockford, Iowa, with temperature in the range of an average low of 10°F (-12.2°C) and an average high of 22.5°F (-5.3°C). Rockford's coldest temperatures are experienced in January, with average high temperatures of 22.5°F (-5.3°C) and lows of 10°F (-12.2°C). Weather in January »
Weather in February
The last month of the winter, February, is also a subzero cold month in Rockford, Iowa, with temperature in the range of an average high of 26.6°F (-3°C) and an average low of 13.5°F (-10.3°C). The average high-temperature during February registers at a still freezing cold 26.6°F (-3°C), maintaining a close resemblance to the previous month. Weather in February »
Weather in March
The first month of the spring, March, is an icy month in Rockford, Iowa, with an average temperature fluctuating between 27.7°F (-2.4°C) and 41.5°F (5.3°C). A shift in Rockford's weather is noticeable as February turns into March, with the average high temperature increases from a subzero cold 26.6°F (-3°C) to a wintry 41.5°F (5.3°C). Weather in March »
Weather in April
April is a cool spring month in Rockford, Iowa, with an average temperature varying between 39.4°F (4.1°C) and 54.9°F (12.7°C). The shift into April is characterized by a rise in the average high-temperature, transitioning from March's wintry 41.5°F (5.3°C) to a fresh 54.9°F (12.7°C). Weather in April »
Weather in May
May, the last month of the spring in Rockford, is a refreshing month, with an average temperature fluctuating between 66.9°F (19.4°C) and 50.5°F (10.3°C). A rise in the average high-temperature is observed during May, moving from a fresh 54.9°F (12.7°C) in April to a refreshing 66.9°F (19.4°C). Weather in May »
Weather in June
The first month of the summer, June, is a warm month in Rockford, Iowa, with an average temperature varying between 60.6°F (15.9°C) and 76.8°F (24.9°C). Rockford's weather in June presents a rise in the average high-temperature, moving from a comfortable 66.9°F (19.4°C) in May to a moderately hot 76.8°F (24.9°C). Weather in June »
Weather in July
July, the same as June, is a moderately hot summer month in Rockford, Iowa, with an average temperature varying between 62.6°F (17°C) and 79.3°F (26.3°C). Rockford notes the warmest temperatures in July, with a high average of 79.3°F (26.3°C) and a low of 62.6°F (17°C). Weather in July »
Weather in August
August, the last month of the summer in Rockford, is also a moderately hot month, with an average temperature varying between 77.5°F (25.3°C) and 59.9°F (15.5°C). August experiences an average high-temperature of a still moderately hot 77.5°F (25.3°C), barely different from July's 79.3°F (26.3°C). Weather in August »
Weather in September
The first month of the autumn, September, is still a pleasant month in Rockford, Iowa, with temperature in the range of an average high of 72.5°F (22.5°C) and an average low of 53.4°F (11.9°C). The start of September marks an average high-temperature of an agreeable 72.5°F (22.5°C), hardly distinguishable from the conditions in August. Weather in September »
Weather in October
October, the same as September, in Rockford, Iowa, is another mild autumn month, with an average temperature fluctuating between 57.6°F (14.2°C) and 42.6°F (5.9°C). A clear decrease in the average high-temperature is observed during October, decreasing from a pleasant 72.5°F (22.5°C) in September to a mild 57.6°F (14.2°C). Weather in October »
Weather in November
The last month of the autumn, November, is also a frosty month in Rockford, Iowa, with an average temperature fluctuating between 42.8°F (6°C) and 30.2°F (-1°C). November's arrival witnesses a distinct temperature drop, receding from October's mild 57.6°F (14.2°C) to a chilly 42.8°F (6°C). Weather in November »
Weather in December
The first month of the winter, December, is still a freezing cold month in Rockford, Iowa, with an average temperature fluctuating between 28.4°F (-2°C) and 18°F (-7.8°C). In December, the meteorological conditions markedly change with the average high-temperature descending from a chilly 42.8°F (6°C) in November to a subzero cold 28.4°F (-2°C). Weather in December »
Updated: Aug 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the coldest month?
Rockford records the coldest temperatures in January, averaging a high of 22.5°F (-5.3°C) and a low of 10°F (-12.2°C).
What is the most humid month?
The most humid month is January, with an average relative humidity of 89%.
What is the driest month in Rockford?
January is the month with the least rainfall. Rain falls for 3.8 days and accumulates 0.94" (24mm) of precipitation.
How much does it rain?
Throughout the year, there are 129.5 rainfall days, and 25.98" (660mm) of precipitation is accumulated.
When does it snow?
January through May, October through December are months with snowfall.
How many days does it snow?
In Rockford, during the entire year, snow falls for 50.1 days and aggregates up to 21.69" (551mm) of snow.
What is the month with the least sunshine?
January has the least sunshine of the year, with an average of 3.6h of sunshine.
What is the month with the lowest UV index?
The months with the lowest UV index are January and December, with an average maximum UV index of 1.
When does it snow the most?
The month with the most snowfall is February, when snow falls for 10.7 days and typically aggregates up to 5.94" (151mm) of snow.
When is Daylight Saving Time (DST)?
On Sunday, March 10. 2024, at 2:00 am, Daylight Saving Time starts, and the time zone changes from CST to CDT. Daylight Saving Time ends Sunday, November 3. 2024, at 2:00 am, and the time zone reverts from CDT to CST.
What is the rainiest month?
The month with the most rainfall is June, when the rain falls for 17.8 days and typically aggregates up to 3.98" (101mm) of precipitation.
When it does not snow?
June through September are months without snowfall.
When are the longest days in Rockford?
The month with the longest days is June, with an average of 15h and 18min of daylight.
When is the highest UV index?
The months with the highest UV index are June and July, with an average maximum UV index of 6.
What is the hottest time of year?
In Rockford, the peak temperatures are generally noted in July, averaging a high of 79.3°F (26.3°C) and a low of 62.6°F (17°C).
What is the month with the most sunshine?
July and August, with an average of 9.7h of sunshine, are months with the most sunshine in Rockford.
What is the least humid month in Rockford?
With an average relative humidity of 71%, October is the least humid month.
What is the month with the shortest days?
December has the shortest days of the year, with an average of 9h and 6min of daylight.
Average temperature
Rockford, IA
The warmest month (with the highest average high temperature) is July (79.3°F).
The month with the lowest average high temperature is January (22.5°F).
The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (10°F).
Average pressure
Rockford, IA
- Average pressure in January:
30.14"Hg - Average pressure in February:
30.14"Hg - Average pressure in March:
30.08"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.88"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
29.99"Hg - Average pressure in November:
30.07"Hg - Average pressure in December:
30.11"Hg
The months with the highest atmospheric pressure are January and February (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.88"Hg).
Average wind speed
Rockford, IA
- Average wind speed in January:
10.7mph - Average wind speed in February:
10.6mph - Average wind speed in March:
10.4mph - Average wind speed in April:
10.7mph - Average wind speed in May:
9.3mph - Average wind speed in June:
8.3mph
- Average wind speed in July:
7.2mph - Average wind speed in August:
7.3mph - Average wind speed in September:
8.3mph - Average wind speed in October:
9.9mph - Average wind speed in November:
10.6mph - Average wind speed in December:
10.1mph
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 July (7.2mph).
Average humidity
Rockford, IA
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Rockford, IA
- Average rainfall in January:
0.94" - Average rainfall in February:
1.22" - Average rainfall in March:
1.57" - Average rainfall in April:
2.68" - Average rainfall in May:
3.35" - Average rainfall in June:
3.98"
- Average rainfall in July:
2.48" - Average rainfall in August:
2.36" - Average rainfall in September:
2.52" - Average rainfall in October:
2.24" - Average rainfall in November:
1.3" - Average rainfall in December:
1.34"
The wettest month (with the highest rainfall) is June (3.98").
The driest month (with the least rainfall) is January (0.94").
Average rainfall days
Rockford, IA
- Average rainfall days in January:
3.8 days - Average rainfall days in February:
3 days - Average rainfall days in March:
9.7 days - Average rainfall days in April:
15 days - Average rainfall days in May:
16.7 days - Average rainfall days in June:
17.8 days
- Average rainfall days in July:
14.7 days - Average rainfall days in August:
12.6 days - Average rainfall days in September:
11.5 days - Average rainfall days in October:
11.2 days - Average rainfall days in November:
8 days - Average rainfall days in December:
5.5 days
The month with the highest number of rainy days is June (17.8 days).
The month with the least rainy days is February (3 days).
Average snowfall
Rockford, IA
The month with the highest snowfall is February (5.94").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days
Rockford, IA
- Average snowfall days in January:
12.7 days - Average snowfall days in February:
10.7 days - Average snowfall days in March:
6.5 days - Average snowfall days in April:
2.4 days - Average snowfall days in May:
0.3 days - Average snowfall days in June:
0 days
- Average snowfall days in July:
0 days - Average snowfall days in August:
0 days - Average snowfall days in September:
0 days - Average snowfall days in October:
1.2 days - Average snowfall days in November:
4.6 days - Average snowfall days in December:
11.7 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 / Average sunshine
Rockford, IA
- Average daylight in January:
9h and 2min - Average daylight in February:
10h and 4min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 2min - Average daylight in May:
14h and 4min - Average daylight in June:
15h and 2min
- Average daylight in July:
15h and 0min - Average daylight in August:
13h and 5min - Average daylight in September:
12h and 3min - Average daylight in October:
11h and 0min - Average daylight in November:
9h and 4min - Average daylight in December:
9h and 1min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in January:
3h and 4min - Average sunshine in February:
4h and 0min - Average sunshine in March:
5h and 5min - Average sunshine in April:
7h and 3min - Average sunshine in May:
8h and 2min - Average sunshine in June:
9h and 2min
- Average sunshine in July:
9h and 4min - Average sunshine in August:
9h and 4min - Average sunshine in September:
8h and 5min - Average sunshine in October:
5h and 2min - Average sunshine in November:
5h and 1min - Average sunshine in December:
4h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days
Rockford, IA
- Average sunshine days in January:
15.9 days - Average sunshine days in February:
14.9 days - Average sunshine days in March:
15.9 days - Average sunshine days in April:
12.3 days - Average sunshine days in May:
12.7 days - Average sunshine days in June:
10.5 days
- Average sunshine days in July:
12.9 days - Average sunshine days in August:
15.8 days - Average sunshine days in September:
16.6 days - Average sunshine days in October:
17.2 days - Average sunshine days in November:
17.7 days - Average sunshine days in December:
16.4 days
The month with the most sunshine days is November (17.7 days).
The month with the least sunshine days is June (10.5 days).
Average UV index
Rockford, IA
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 1).
Average cloud cover
Rockford, IA
The month with the most cloud cover is January (Cloud cover 62).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility
Rockford, IA
The months with the highest visibility are February, March, April, May, June, August, September, October, November and December (6mi).
The months with the lowest visibility are January and July (5mi).