Climate and monthly weather forecastRockport, IL
Climate and monthly weather forecast
Weather in January
January, the same as December, is a wintry winter month in Rockport, Illinois, with temperature in the range of an average high of 34.9°F (1.6°C) and an average low of 22.1°F (-5.5°C). With its high average temperature of 34.9°F (1.6°C) and a low of 22.1°F (-5.5°C), January is regarded as the coldest month. Weather in January »Weather in February
February, the last month of the winter in Rockport, is another cold month, with an average temperature ranging between max 39.6°F (4.2°C) and min 25.2°F (-3.8°C). The beginning of February records an average high-temperature of a still cold 39.6°F (4.2°C), almost echoing the conditions of the previous month. Weather in February »Weather in March
March, the first month of the spring in Rockport, is a fresh month, with an average temperature varying between 52.2°F (11.2°C) and 36.5°F (2.5°C). March's onset brings a temperature rise, moving from a cold 39.6°F (4.2°C) in February to a fresh 52.2°F (11.2°C). Weather in March »Weather in April
April in Rockport, Illinois, is a refreshing spring month, with an average temperature ranging between max 64°F (17.8°C) and min 45.9°F (7.7°C). April brings an increase in the average high-temperature, progressing from a fresh 52.2°F (11.2°C) in March to a refreshing 64°F (17.8°C). Weather in April »Weather in May
May, the last month of the spring in Rockport, is an agreeable month, with temperature in the range of an average low of 55.9°F (13.3°C) and an average high of 73°F (22.8°C). As Rockport enters May, the average high-temperature increases from the an enjoyable 64°F (17.8°C) of April to an agreeable 73°F (22.8°C). Weather in May »Weather in June
The first month of the summer, June, is a warm month in Rockport, Illinois, with an average temperature ranging between max 82.2°F (27.9°C) and min 64.8°F (18.2°C). Rockport in June shows a temperature shift, moving from an average high of a pleasant 73°F (22.8°C) in May to a warm 82.2°F (27.9°C). Weather in June »Weather in July
July, the same as June, is a moderately hot summer month in Rockport, Illinois, with an average temperature fluctuating between 67.1°F (19.5°C) and 84.7°F (29.3°C). July proves to be the warmest month, recording an average peak temperature of 84.7°F (29.3°C) and a minimum temperature of 67.1°F (19.5°C). In July, the average heat index is evaluated at a torrid 96.8°F (36°C). Weather in July »Weather in August
The last month of the summer, August, is also a moderately hot month in Rockport, Illinois, with an average temperature varying between 84.4°F (29.1°C) and 65.5°F (18.6°C). August observes an average high-temperature of a still moderately hot 84.4°F (29.1°C), marking an insignificant difference from July's 84.7°F (29.3°C). Weather in August »Weather in September
September, the first month of the autumn in Rockport, is still a warm month, with an average temperature ranging between min 58.6°F (14.8°C) and max 78.3°F (25.7°C). September is characterized by a slight reduction in average high-temperature, easing from a moderately hot 84.4°F (29.1°C) in August to a still warm 78.3°F (25.7°C). Weather in September »Weather in October
October, like September, in Rockport, Illinois, is another refreshing autumn month, with an average temperature varying between 64.4°F (18°C) and 47.1°F (8.4°C). October implies a gentle temperature shift, with average high-temperatures reducing from September's warm 78.3°F (25.7°C) to a refreshing 64.4°F (18°C). Weather in October »Weather in November
November, the last month of the autumn in Rockport, is another cool month, with an average temperature fluctuating between 36.5°F (2.5°C) and 51.6°F (10.9°C). The average high-temperature decreases in November, shifting from a refreshing 64.4°F (18°C) in October to a cool 51.6°F (10.9°C). Weather in November »Weather in December
December, the first month of the winter in Rockport, is also an icy month, with temperature in the range of an average high of 40.5°F (4.7°C) and an average low of 28.2°F (-2.1°C). The onset of December coincides with a reduction in the average high-temperature, falling from a cool 51.6°F (10.9°C) in November to a cold 40.5°F (4.7°C). Weather in December »Updated: Aug 4, 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
January is Rockport's coldest month, registering average high temperatures of 34.9°F (1.6°C) and lows of 22.1°F (-5.5°C).
In Rockport, during the entire year, the rain falls for 142.7 days and collects up to 27.64" (702mm) of precipitation.
January through April, October through December are months with snowfall.
The month with the most snowfall is January, when snow falls for 8.5 days and typically aggregates up to 3.03" (77mm) of snow.
In Rockport, during the entire year, snow falls for 26.1 days and aggregates up to 9.45" (240mm) of snow.
January and February, with an average of 4.5h of sunshine, are months with the least sunshine.
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2.
The month with the least rainfall is February, when the rain falls for 6.3 days and typically collects 1.46" (37mm) of precipitation.
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.
The most humid month is May, with an average relative humidity of 81%.
May is the month with the most rainfall. Rain falls for 17.3 days and accumulates 3.5" (89mm) of precipitation.
May through September are months without snowfall in Rockport, Illinois.
The month with the longest days is June, with an average of 14h and 54min of daylight.
The month with the most sunshine in Rockport is June, with an average of 10.2h of sunshine.
June through August, with an average maximum UV index of 6, are months with the highest UV index.
Rockport reaches its average highest temperatures in July, measuring 84.7°F (29.3°C) at the peak and 67.1°F (19.5°C) at the lowest.
October is the least humid month, with an average relative humidity of 71%.
With an average of 9h and 24min of daylight, December has the shortest days of the year.
Average temperature
Rockport, IL
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (34.9°F).
The month with the highest average low temperature is July (67.1°F).
The coldest month (with the lowest average low temperature) is January (22.1°F).
Average pressure
Rockport, IL
- Average pressure in January:
30.15"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.07"Hg - Average pressure in April:
29.93"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.91"Hg
- Average pressure in July:
29.96"Hg - Average pressure in August:
29.97"Hg - Average pressure in September:
30.02"Hg - Average pressure in October:
30.03"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.12"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).
Average wind speed
Rockport, IL
- Average wind speed in January:
9.7mph - Average wind speed in February:
9.7mph - Average wind speed in March:
9.6mph - Average wind speed in April:
9.6mph - Average wind speed in May:
7.8mph - Average wind speed in June:
7mph
- Average wind speed in July:
6mph - Average wind speed in August:
6.1mph - Average wind speed in September:
6.8mph - Average wind speed in October:
8.3mph - Average wind speed in November:
9.2mph - Average wind speed in December:
9.3mph
The windiest months (with the highest average wind speed) are January and February (9.7mph).
The calmest month (with the lowest average wind speed) is July (6mph).
Average humidity
Rockport, IL
The month with the highest relative humidity is May (81%).
The month with the lowest relative humidity is October (71%).
Average rainfall
Rockport, IL
- Average rainfall in January:
1.54" - Average rainfall in February:
1.46" - Average rainfall in March:
2.28" - Average rainfall in April:
2.83" - Average rainfall in May:
3.5" - Average rainfall in June:
3.23"
- Average rainfall in July:
2.44" - Average rainfall in August:
2.52" - Average rainfall in September:
2.36" - Average rainfall in October:
2.32" - Average rainfall in November:
1.65" - Average rainfall in December:
1.5"
The wettest month (with the highest rainfall) is May (3.5").
The driest month (with the least rainfall) is February (1.46").
Average rainfall days
Rockport, IL
- Average rainfall days in January:
6.3 days - Average rainfall days in February:
6.3 days - Average rainfall days in March:
13 days - Average rainfall days in April:
14.8 days - Average rainfall days in May:
17.3 days - Average rainfall days in June:
16 days
- Average rainfall days in July:
16.2 days - Average rainfall days in August:
13.3 days - Average rainfall days in September:
11.9 days - Average rainfall days in October:
11.1 days - Average rainfall days in November:
8.9 days - Average rainfall days in December:
7.6 days
The month with the highest number of rainy days is May (17.3 days).
The months with the least rainy days are January and February (6.3 days).
Average snowfall
Rockport, IL
The month with the highest snowfall is January (3.03").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days
Rockport, IL
- Average snowfall days in January:
8.5 days - Average snowfall days in February:
7.4 days - Average snowfall days in March:
3.6 days - Average snowfall days in April:
0.5 days - Average snowfall days in May:
0 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:
0.1 days - Average snowfall days in November:
1.5 days - Average snowfall days in December:
4.5 days
The month with the highest number of snowfall days is January (8.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Rockport, IL
- Average daylight in January:
9h and 48min - Average daylight in February:
10h and 42min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 18min - Average daylight in May:
14h and 24min - Average daylight in June:
14h and 54min
- Average daylight in July:
14h and 36min - Average daylight in August:
13h and 42min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 6min - Average daylight in November:
10h and 0min - Average daylight in December:
9h and 24min
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 January:
4h and 30min - Average sunshine in February:
4h and 30min - Average sunshine in March:
6h and 24min - Average sunshine in April:
8h and 6min - Average sunshine in May:
9h and 6min - Average sunshine in June:
10h and 12min
- Average sunshine in July:
10h and 6min - Average sunshine in August:
9h and 54min - Average sunshine in September:
9h and 18min - Average sunshine in October:
5h and 54min - Average sunshine in November:
5h and 24min - Average sunshine in December:
4h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 12min).
The months with the least sunshine are January and February (Average sunshine: 4h and 30min).
Average sunshine days
Rockport, IL
- Average sunshine days in January:
17.3 days - Average sunshine days in February:
14.5 days - Average sunshine days in March:
13.8 days - Average sunshine days in April:
13.3 days - Average sunshine days in May:
11.3 days - Average sunshine days in June:
10.9 days
- Average sunshine days in July:
12.1 days - Average sunshine days in August:
15 days - Average sunshine days in September:
15.9 days - Average sunshine days in October:
17.6 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
19.2 days
The month with the most sunshine days is December (19.2 days).
The month with the least sunshine days is June (10.9 days).
Average UV index
Rockport, IL
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).
Average cloud cover
Rockport, IL
The month with the most cloud cover is January (Cloud cover 52).
The months with the least cloud cover are June, July, August and September (Cloud cover 30).
Average visibility
Rockport, IL
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
