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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, like December, is a frosty winter month in Rock Island, Tennessee, with an average temperature ranging between min 29.8°F (-1.2°C) and max 44.2°F (6.8°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 44.2°F (6.8°C) and a low of 29.8°F (-1.2°C). Weather in January »
Weather in February
The last month of the winter, February, is another chilly month in Rock Island, Tennessee, with an average temperature fluctuating between 33.8°F (1°C) and 49.3°F (9.6°C). The advent of February brings an average high-temperature of a still frosty 49.3°F (9.6°C), exhibiting minor difference from the previous month. Weather in February »
Weather in March
The first month of the spring, March, is a moderate month in Rock Island, Tennessee, with an average temperature varying between 40.6°F (4.8°C) and 57.4°F (14.1°C). March sees a marginal temperature increase, moving from a chilly 49.3°F (9.6°C) in February to a refreshing 57.4°F (14.1°C). Weather in March »
Weather in April
April in Rock Island, Tennessee, is an enjoyable spring month, with an average temperature fluctuating between 67.6°F (19.8°C) and 48.4°F (9.1°C). Rock Island's transition into April is marked by a rise in the average high-temperature, advancing from a moderate 57.4°F (14.1°C) in March to a comfortable 67.6°F (19.8°C). Weather in April »
Weather in May
The last month of the spring, May, is a moderately hot month in Rock Island, Tennessee, with an average temperature varying between 56.3°F (13.5°C) and 76.1°F (24.5°C). The onset of May introduces a subtle rise in the average high-temperature, nudging from an enjoyable 67.6°F (19.8°C) in April to a moderately hot 76.1°F (24.5°C). Weather in May »
Weather in June
June, the first month of the summer in Rock Island, is also a moderately hot month, with an average temperature varying between 83.8°F (28.8°C) and 63.1°F (17.3°C). June brings a slight elevation in the average high-temperature, transitioning from May's warm 76.1°F (24.5°C) to a still moderately hot 83.8°F (28.8°C). Weather in June »
Weather in July
July in Rock Island, Tennessee, is a hot summer month, with an average temperature ranging between min 65.8°F (18.8°C) and max 86°F (30°C). In Rock Island, July is identified by the highest average temperatures, reaching a peak of 86°F (30°C) and a low of 65.8°F (18.8°C). For most parts of July, the heat index is appraised at a torrid 98.6°F (37°C). Weather in July »
Weather in August
August, the last month of the summer in Rock Island, is another warm month, with temperature in the range of an average low of 64.9°F (18.3°C) and an average high of 84.9°F (29.4°C). Rock Island's August showcases an average high-temperature of a moderately hot 84.9°F (29.4°C), hardly distinct from July's 86°F (30°C). Weather in August »
Weather in September
September, the first month of the autumn in Rock Island, is still a warm month, with an average temperature fluctuating between 79.7°F (26.5°C) and 59.9°F (15.5°C). The transition into September shows a subtle variation to a still moderately hot 79.7°F (26.5°C) from August's 84.9°F (29.4°C) in the average high-temperature. Weather in September »
Weather in October
October, the same as September, in Rock Island, Tennessee, is an agreeable autumn month, with an average temperature fluctuating between 68.7°F (20.4°C) and 48.9°F (9.4°C). October shows a mild decline in the average high-temperature, falling from September's moderately hot 79.7°F (26.5°C) to a pleasant 68.7°F (20.4°C). Weather in October »
Weather in November
The last month of the autumn, November, is another mild month in Rock Island, Tennessee, with an average temperature ranging between min 39.2°F (4°C) and max 56.5°F (13.6°C). The move into November indicates a reduction in the average high-temperature, down from October's agreeable 68.7°F (20.4°C) to a moderate 56.5°F (13.6°C). Weather in November »
Weather in December
December, the first month of the winter in Rock Island, is also a frosty month, with temperature in the range of an average low of 35.2°F (1.8°C) and an average high of 48.9°F (9.4°C). A moderate decline in average high-temperatures is noted in December, moving from a refreshing 56.5°F (13.6°C) in November to a frosty 48.9°F (9.4°C). Weather in December »
Updated: Feb 14, 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 are the coldest months in Rock Island?
Rock Island experiences its average lowest temperatures in January, reaching a peak of 44.2°F (6.8°C) and a minimum of 29.8°F (-1.2°C).
How many days does it rain in Rock Island?
Throughout the year, in Rock Island, there are 177.3 rainfall days, and 31.02" (788mm) of precipitation is accumulated.
When does it snow in Rock Island?
January through April, November and December are months with snowfall.
How much does it snow in Rock Island?
Throughout the year, there are 11 snowfall days, and 1.61" (41mm) of snow is accumulated.
What are the months with the lowest UV index in Rock Island?
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Rock Island, Tennessee.
When does it snow the most in Rock Island?
February is the month with the most snowfall. Snow falls for 3.1 days and accumulates 0.51" (13mm) of snow.
What is the month with the least sunshine in Rock Island?
The month with the least sunshine in Rock Island is February, with an average of 4.4h of sunshine.
When is Daylight Saving Time (DST) in Rock Island?
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.
When it does not snow in Rock Island?
May through October are months without snowfall in Rock Island, Tennessee.
What are the months with the highest UV index in Rock Island?
May through August, with an average maximum UV index of 6, are months with the highest UV index in Rock Island, Tennessee.
When are the longest days in Rock Island?
With an average of 14h and 30min of daylight, June has the longest days of the year in Rock Island, Tennessee.
What month has the most sunshine in Rock Island?
With an average of 10.5h of sunshine, June has the most sunshine of the year in Rock Island, Tennessee.
What month is the hottest in Rock Island?
Rock Island experiences its average highest temperatures in July, reaching a peak of 86°F (30°C) and a minimum of 65.8°F (18.8°C).
What is the rainiest month in Rock Island?
The month with the most rainfall is July, when the rain falls for 20.9 days and typically aggregates up to 3.82" (97mm) of precipitation.
What are the least humid months in Rock Island?
October and November, with an average relative humidity of 76%, are the least humid months.
What is the driest month in Rock Island?
November is the month with the least rainfall in Rock Island, Tennessee. Rain falls for 9.3 days and accumulates 1.65" (42mm) of precipitation.
What is the most humid month in Rock Island?
With an average relative humidity of 81%, December is the most humid month in Rock Island.
What is the month with the shortest days in Rock Island?
The month with the shortest days is December, with an average of 9h and 48min of daylight.
Average temperature
Rock Island, TN
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (44.2°F).
The month with the highest average low temperature is July (65.8°F).
The coldest month (with the lowest average low temperature) is January (29.8°F).
Average pressure
Rock Island, TN
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.12"Hg - Average pressure in March:
30.09"Hg - Average pressure in April:
30"Hg - Average pressure in May:
30.01"Hg - Average pressure in June:
29.98"Hg
- Average pressure in July:
30"Hg - Average pressure in August:
30"Hg - Average pressure in September:
30.03"Hg - Average pressure in October:
30.06"Hg - Average pressure in November:
30.16"Hg - Average pressure in December:
30.15"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.98"Hg).
Average wind speed
Rock Island, TN
- Average wind speed in January:
7mph - Average wind speed in February:
7.4mph - Average wind speed in March:
7.2mph - Average wind speed in April:
7.1mph - Average wind speed in May:
5.7mph - Average wind speed in June:
4.8mph
- Average wind speed in July:
4.3mph - Average wind speed in August:
4.2mph - Average wind speed in September:
4.5mph - Average wind speed in October:
5.6mph - Average wind speed in November:
6.1mph - Average wind speed in December:
6.6mph
The windiest month (with the highest average wind speed) is February (7.4mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity
Rock Island, TN
The month with the highest relative humidity is December (81%).
The months with the lowest relative humidity are October and November (76%).
Average rainfall
Rock Island, TN
- Average rainfall in January:
2.05" - Average rainfall in February:
2.76" - Average rainfall in March:
2.13" - Average rainfall in April:
2.91" - Average rainfall in May:
3.11" - Average rainfall in June:
2.91"
- Average rainfall in July:
3.82" - Average rainfall in August:
3.46" - Average rainfall in September:
1.89" - Average rainfall in October:
2.09" - Average rainfall in November:
1.65" - Average rainfall in December:
2.24"
The wettest month (with the highest rainfall) is July (3.82").
The driest month (with the least rainfall) is November (1.65").
Average rainfall days
Rock Island, TN
- Average rainfall days in January:
11.5 days - Average rainfall days in February:
12 days - Average rainfall days in March:
15.2 days - Average rainfall days in April:
13.8 days - Average rainfall days in May:
18.5 days - Average rainfall days in June:
18.7 days
- Average rainfall days in July:
20.9 days - Average rainfall days in August:
19.7 days - Average rainfall days in September:
14.5 days - Average rainfall days in October:
10.8 days - Average rainfall days in November:
9.3 days - Average rainfall days in December:
12.4 days
The month with the highest number of rainy days is July (20.9 days).
The month with the least rainy days is November (9.3 days).
Average snowfall
Rock Island, TN
The month with the highest snowfall is February (0.51").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days
Rock Island, TN
- Average snowfall days in January:
3.6 days - Average snowfall days in February:
3.1 days - Average snowfall days in March:
1.4 days - Average snowfall days in April:
0.2 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 days - Average snowfall days in December:
1.6 days
The month with the highest number of snowfall days is January (3.6 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight / Average sunshine
Rock Island, TN
- Average daylight in January:
10h and 1min - Average daylight in February:
10h and 5min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 1min - Average daylight in May:
14h and 1min - Average daylight in June:
14h and 3min
- Average daylight in July:
14h and 2min - Average daylight in August:
13h and 3min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 2min - Average daylight in December:
9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
- Average sunshine in January:
4h and 4min - Average sunshine in February:
4h and 2min - Average sunshine in March:
5h and 4min - Average sunshine in April:
8h and 5min - Average sunshine in May:
9h and 2min - Average sunshine in June:
10h and 3min
- Average sunshine in July:
10h and 1min - Average sunshine in August:
10h and 1min - Average sunshine in September:
8h and 1min - Average sunshine in October:
7h and 0min - Average sunshine in November:
5h and 4min - Average sunshine in December:
4h and 5min
The month with the most sunshine is June (Average sunshine: 10h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 24min).
Average sunshine days
Rock Island, TN
- Average sunshine days in January:
16.6 days - Average sunshine days in February:
13.3 days - Average sunshine days in March:
13.7 days - Average sunshine days in April:
14 days - Average sunshine days in May:
11 days - Average sunshine days in June:
9.3 days
- Average sunshine days in July:
8.4 days - Average sunshine days in August:
9.4 days - Average sunshine days in September:
13.3 days - Average sunshine days in October:
18.2 days - Average sunshine days in November:
18.5 days - Average sunshine days in December:
16.7 days
The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is July (8.4 days).
Average UV index
Rock Island, TN
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover
Rock Island, TN
The month with the most cloud cover is February (Cloud cover 54).
The month with the least cloud cover is June (Cloud cover 30).
Average visibility
Rock Island, TN
The months with the highest visibility are February, April, June, October and November (6mi).
The months with the lowest visibility are January, March, May, July, August, September and December (5mi).
Rock Island, Tennessee, USA
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