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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
Weather in January
January, the same as December, is an icy winter month in Rockport, Illinois, with an average temperature ranging between max 34.9°F (1.6°C) and min 22.1°F (-5.5°C). January, with average temperatures reaching a high of 34.9°F (1.6°C) and a low of 22.1°F (-5.5°C), is the coldest month. Weather in January »
Weather in February
February, the last month of the winter in Rockport, is also a wintry month, with an average temperature ranging between min 25.2°F (-3.8°C) and max 39.6°F (4.2°C). The transition from January to February sees an average high-temperature of a still cold 39.6°F (4.2°C), indicating a minor variance from the prior month. Weather in February »
Weather in March
March, the first month of the spring in Rockport, is a fresh month, with temperature in the range of an average high of 52.2°F (11.2°C) and an average low of 36.5°F (2.5°C). The average high-temperature increases in March, moving from a cold 39.6°F (4.2°C) in February to a cool 52.2°F (11.2°C). Weather in March »
Weather in April
April in Rockport, Illinois, is a refreshing spring month, with temperature in the range of an average low of 45.9°F (7.7°C) and an average high of 64°F (17.8°C). As April begins, there is an increase in the average high-temperature, moving from a fresh 52.2°F (11.2°C) in March to a comfortable 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 an average temperature ranging between min 55.9°F (13.3°C) and max 73°F (22.8°C). May comes with an increase, with the average high-temperature moving from a refreshing 64°F (17.8°C) in April to a pleasant 73°F (22.8°C). Weather in May »
Weather in June
The first month of the summer, June, is a moderately hot month in Rockport, Illinois, with temperature in the range of an average high of 82.2°F (27.9°C) and an average low of 64.8°F (18.2°C). A rise in the average high-temperature is observed during June, moving from an agreeable 73°F (22.8°C) in May to a warm 82.2°F (27.9°C). Weather in June »
Weather in July
July, like June, in Rockport, Illinois, is a moderately hot summer month, with an average temperature fluctuating between 67.1°F (19.5°C) and 84.7°F (29.3°C). In Rockport, July is the month with the highest recorded average temperatures, measuring a high of 84.7°F (29.3°C) and a low of 67.1°F (19.5°C). For July, the heat index is calculated to be a sweltering 96.8°F (36°C). Weather in July »
Weather in August
The last month of the summer, August, is another warm month in Rockport, Illinois, with an average temperature ranging between max 84.4°F (29.1°C) and min 65.5°F (18.6°C). Rockport observes a minor difference in average high-temperatures between July's 84.7°F (29.3°C) and August's 84.4°F (29.1°C). Weather in August »
Weather in September
September, the first month of the autumn in Rockport, is also a moderately hot month, with an average temperature ranging between max 78.3°F (25.7°C) and min 58.6°F (14.8°C). The transition to September results in a modest reduction in average high-temperature, moving 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 enjoyable autumn month, with an average temperature ranging between max 64.4°F (18°C) and min 47.1°F (8.4°C). During the transition into October, Rockport observes a decrease in the average high-temperature, falling from a warm 78.3°F (25.7°C) in September to a comfortable 64.4°F (18°C). Weather in October »
Weather in November
The last month of the autumn, November, is another cool month in Rockport, Illinois, with temperature in the range of an average high of 51.6°F (10.9°C) and an average low of 36.5°F (2.5°C). The onset of November entails a temperature shift, as the average high-temperature decreases from a refreshing 64.4°F (18°C) in October to a fresh 51.6°F (10.9°C). Weather in November »
Weather in December
The first month of the winter, December, is still a cold month in Rockport, Illinois, with temperature in the range of an average low of 28.2°F (-2.1°C) and an average high of 40.5°F (4.7°C). As December commences, the average high-temperature shows a reduction, transitioning from a cool 51.6°F (10.9°C) in November to a cold 40.5°F (4.7°C). Weather in December »
[Resources]Frequently asked questions
What are the coldest months in Rockport?
In Rockport, Illinois, the average lowest temperatures are observed in January, with a high of 34.9°F (1.6°C) and a low of 22.1°F (-5.5°C).
How many days does it rain in Rockport?
Throughout the year, in Rockport, there are 142.7 rainfall days, and 27.64" (702mm) of precipitation is accumulated.
When does it snow in Rockport?
January through April, October through December are months with snowfall in Rockport.
When does it snow the most in Rockport?
January is the month with the most snowfall. Snow falls for 8.5 days and accumulates 3.03" (77mm) of snow.
How many days does it snow in Rockport?
In Rockport, Illinois, during the entire year, snow falls for 26.1 days and aggregates up to 9.45" (240mm) of snow.
What is the month with the least sunshine in Rockport?
January and February, with an average of 4.5h of sunshine, are months with the least sunshine in Rockport, Illinois.
When is the lowest UV index in Rockport?
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Rockport.
What is the driest month in Rockport?
February is the month with the least rainfall in Rockport, Illinois. Rain falls for 6.3 days and accumulates 1.46" (37mm) of precipitation.
When is Daylight Saving Time (DST) in Rockport?
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 most humid month in Rockport?
The most humid month is May, with an average relative humidity of 81%.
What is the rainiest month in Rockport?
The month with the most rainfall is May, when the rain falls for 17.3 days and typically aggregates up to 3.5" (89mm) of precipitation.
When it does not snow in Rockport?
May through September are months without snowfall in Rockport.
When are the longest days in Rockport?
With an average of 14h and 54min of daylight, June has the longest days of the year.
What month has the most sunshine in Rockport?
The month with the most sunshine in Rockport, Illinois, is June, with an average of 10.2h of sunshine.
What are the months with the highest UV index in Rockport?
The months with the highest UV index in Rockport are June through August, with an average maximum UV index of 6.
What are the warmest months in Rockport?
July tends to be the warmest month, with temperatures averaging a daily high of 84.7°F (29.3°C) and a low of 67.1°F (19.5°C).
What is the least humid month in Rockport?
October is the least humid month in Rockport, with an average relative humidity of 71%.
What is the month with the shortest days in Rockport?
The month with the shortest days is December, with an average of 9h and 24min of daylight.
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 5min - 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 2min - Average daylight in June:
14h and 5min
- Average daylight in July:
14h and 4min - Average daylight in August:
13h and 4min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 1min - Average daylight in November:
10h and 0min - Average daylight in December:
9h 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 January:
4h and 3min - Average sunshine in February:
4h and 3min - Average sunshine in March:
6h and 2min - Average sunshine in April:
8h and 1min - Average sunshine in May:
9h and 1min - Average sunshine in June:
10h and 1min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
9h and 5min - Average sunshine in September:
9h and 2min - Average sunshine in October:
5h and 5min - Average sunshine in November:
5h and 2min - Average sunshine in December:
4h and 5min
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).
Rockport, Illinois, USA
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