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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, in Rock Island, Texas, is another refreshing winter month, with an average temperature fluctuating between 44.2°F (6.8°C) and 60.4°F (15.8°C). The coldest period tends to be January, when average temperatures fluctuate between a high of 60.4°F (15.8°C) and a low of 44.2°F (6.8°C). Weather in January »
Weather in February
February, the last month of the winter in Rock Island, is a comfortable month, with an average temperature fluctuating between 48.6°F (9.2°C) and 64°F (17.8°C). With the onset of February, the average high-temperature stands at an enjoyable 64°F (17.8°C), closely aligned with January's 60.4°F (15.8°C). Weather in February »
Weather in March
The first month of the spring, March, is a pleasant month in Rock Island, Texas, with temperature in the range of an average high of 71.6°F (22°C) and an average low of 54.3°F (12.4°C). With the onset of March, Rock Island experiences a subtle temperature shift, with the average high-temperature moving from a refreshing 64°F (17.8°C) in February to an agreeable 71.6°F (22°C). Weather in March »
Weather in April
April in Rock Island, Texas, is a moderately hot spring month, with temperature in the range of an average low of 59.7°F (15.4°C) and an average high of 77.9°F (25.5°C). April signifies a subtle uplift in the average high-temperature, adjusting from a pleasant 71.6°F (22°C) in March to a moderately hot 77.9°F (25.5°C). Weather in April »
Weather in May
The last month of the spring, May, is also a moderately hot month in Rock Island, Texas, with temperature in the range of an average high of 84.4°F (29.1°C) and an average low of 67.3°F (19.6°C). May brings a slight rise in Rock Island's average high-temperature, moving from 77.9°F (25.5°C) in April to a still warm 84.4°F (29.1°C). Weather in May »
Weather in June
The first month of the summer, June, is a hot month in Rock Island, Texas, with temperature in the range of an average high of 90°F (32.2°C) and an average low of 72.7°F (22.6°C). As Rock Island enters June, the average high-temperature marginally increases from the a warm 84.4°F (29.1°C) of May to a hot 90°F (32.2°C). Weather in June »
Weather in July
July, like June, is a hot summer month in Rock Island, Texas, with an average temperature ranging between min 74.7°F (23.7°C) and max 93.2°F (34°C). July's weather records an average high-temperature of a still hot 93.2°F (34°C), showing little deviation from June. Weather in July »
Weather in August
August, the last month of the summer in Rock Island, is a torrid month, with temperature in the range of an average low of 75°F (23.9°C) and an average high of 95°F (35°C). The warmest period is August, when temperatures fluctuate between an average high of 95°F (35°C) and a low of 75°F (23.9°C). The average heat index in August is estimated at a blazing hot 122°F (50°C). Weather in August »
Weather in September
The first month of the autumn, September, is also a hot month in Rock Island, Texas, with an average temperature varying between 71.4°F (21.9°C) and 88.3°F (31.3°C). September brings a slight decrease in temperature, down from a very hot 95°F (35°C) in August to a tropical 88.3°F (31.3°C). Weather in September »
Weather in October
October, like September, in Rock Island, Texas, is a moderately hot autumn month, with an average temperature ranging between max 80.2°F (26.8°C) and min 62.1°F (16.7°C). October implies a soft temperature shift, with average high-temperatures reducing from September's tropical 88.3°F (31.3°C) to a warm 80.2°F (26.8°C). Weather in October »
Weather in November
The last month of the autumn, November, is another pleasant month in Rock Island, Texas, with an average temperature ranging between max 69.3°F (20.7°C) and min 52.9°F (11.6°C). The start of November involves a temperature drop, moving from a warm 80.2°F (26.8°C) in October to a pleasant 69.3°F (20.7°C). Weather in November »
Weather in December
The first month of the winter, December, is still a comfortable month in Rock Island, Texas, with an average temperature fluctuating between 47.3°F (8.5°C) and 61.7°F (16.5°C). During the shift to December, Rock Island records a mild decrease in average high-temperature, moving from an agreeable 69.3°F (20.7°C) in November to a refreshing 61.7°F (16.5°C). Weather in December »
Updated: Aug 24, 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 time of the year is the coldest?
Rock Island experiences its average lowest temperatures in January, reaching a peak of 60.4°F (15.8°C) and a minimum of 44.2°F (6.8°C).
How much does it rain?
In Rock Island, during the entire year, the rain falls for 163.7 days and collects up to 29.37" (746mm) of precipitation.
When does it snow in Rock Island?
January, February and December are months with snowfall.
When does it snow the most?
The months with the most snowfall are January and December, with an average 0.12" (3mm) of accumulated snow.
How many days does it snow?
In Rock Island, during the entire year, snow falls for 0.9 days and aggregates up to 0.28" (7mm) of snow.
What is the driest month?
February is the month with the least rainfall. Rain falls for 11.3 days and accumulates 1.34" (34mm) of precipitation.
What are the most humid months?
March, May and June, with an average relative humidity of 78%, are most humid months.
When it does not snow in Rock Island?
March through November are months without snowfall.
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 wettest month?
The month with the most rainfall is May, when the rain falls for 16.1 days and typically aggregates up to 4.17" (106mm) of precipitation.
When are the longest days?
June has the longest days of the year, with an average of 14h and 0min of daylight.
What are the months with the highest UV index?
The months with the highest UV index are June through August, with an average maximum UV index of 7.
What time of the year is the hottest?
In Rock Island, temperatures reach their average annual highs in August, measuring 95°F (35°C) and a minimum average of 75°F (23.9°C).
What is the least humid month?
The least humid month is August, with an average relative humidity of 69%.
What month has the most sunshine?
August has the most sunshine of the year in Rock Island, with an average of 9.8h of sunshine.
What is the month with the shortest days?
With an average of 10h and 18min of daylight, December has the shortest days of the year.
What is the month with the least sunshine?
December has the least sunshine of the year, with an average of 4.8h of sunshine.
When is the lowest UV index?
With an average maximum UV index of 3, December is the month with the lowest UV index.
Average temperature
Rock Island, TX
The warmest month (with the highest average high temperature) is August (95°F).
The month with the lowest average high temperature is January (60.4°F).
The month with the highest average low temperature is August (75°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure
Rock Island, TX
- Average pressure in January:
30.16"Hg - Average pressure in February:
30.09"Hg - Average pressure in March:
30.04"Hg - Average pressure in April:
29.95"Hg - Average pressure in May:
29.93"Hg - Average pressure in June:
29.92"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.94"Hg - Average pressure in September:
29.96"Hg - Average pressure in October:
30.01"Hg - Average pressure in November:
30.11"Hg - Average pressure in December:
30.11"Hg
The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.92"Hg).
Average wind speed
Rock Island, TX
- Average wind speed in January:
8.1mph - Average wind speed in February:
8.6mph - Average wind speed in March:
8.6mph - Average wind speed in April:
8.7mph - Average wind speed in May:
8.1mph - Average wind speed in June:
6.8mph
- Average wind speed in July:
6.4mph - Average wind speed in August:
6.3mph - Average wind speed in September:
5.9mph - Average wind speed in October:
7mph - Average wind speed in November:
7.5mph - Average wind speed in December:
7.9mph
The windiest month (with the highest average wind speed) is April (8.7mph).
The calmest month (with the lowest average wind speed) is September (5.9mph).
Average humidity
Rock Island, TX
The months with the highest relative humidity are March, May and June (78%).
The month with the lowest relative humidity is August (69%).
Average rainfall
Rock Island, TX
- Average rainfall in January:
1.5" - Average rainfall in February:
1.34" - Average rainfall in March:
2.05" - Average rainfall in April:
2.17" - Average rainfall in May:
4.17" - Average rainfall in June:
3.03"
- Average rainfall in July:
2.44" - Average rainfall in August:
3.03" - Average rainfall in September:
3.39" - Average rainfall in October:
2.68" - Average rainfall in November:
1.42" - Average rainfall in December:
2.17"
The wettest month (with the highest rainfall) is May (4.17").
The driest month (with the least rainfall) is February (1.34").
Average rainfall days
Rock Island, TX
- Average rainfall days in January:
10.4 days - Average rainfall days in February:
11.3 days - Average rainfall days in March:
12.3 days - Average rainfall days in April:
13.1 days - Average rainfall days in May:
16.1 days - Average rainfall days in June:
16.6 days
- Average rainfall days in July:
15.8 days - Average rainfall days in August:
16.2 days - Average rainfall days in September:
18.3 days - Average rainfall days in October:
11.7 days - Average rainfall days in November:
10.5 days - Average rainfall days in December:
11.4 days
The month with the highest number of rainy days is September (18.3 days).
The month with the least rainy days is January (10.4 days).
Average snowfall
Rock Island, TX
The months with the highest snowfall are January and December (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days
Rock Island, TX
- Average snowfall days in January:
0.4 days - Average snowfall days in February:
0.2 days - Average snowfall days in March:
0 days - Average snowfall days in April:
0 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 days - Average snowfall days in November:
0 days - Average snowfall days in December:
0.3 days
The month with the highest number of snowfall days is January (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight / Average sunshine
Rock Island, TX
- Average daylight in January:
10h and 3min - Average daylight in February:
11h and 1min - Average daylight in March:
12h and 0min - Average daylight in April:
12h and 5min - Average daylight in May:
13h and 4min - Average daylight in June:
14h and 0min
- Average daylight in July:
13h and 5min - Average daylight in August:
13h and 1min - Average daylight in September:
12h and 2min - Average daylight in October:
11h and 2min - Average daylight in November:
10h and 4min - Average daylight in December:
10h and 2min
The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).
- Average sunshine in January:
5h and 3min - Average sunshine in February:
6h and 0min - Average sunshine in March:
6h and 3min - Average sunshine in April:
7h and 5min - 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 5min - Average sunshine in September:
8h and 2min - Average sunshine in October:
6h and 5min - Average sunshine in November:
5h and 3min - Average sunshine in December:
4h and 5min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is December (Average sunshine: 4h and 48min).
Average sunshine days
Rock Island, TX
- Average sunshine days in January:
19.3 days - Average sunshine days in February:
15 days - Average sunshine days in March:
16.7 days - Average sunshine days in April:
14.3 days - Average sunshine days in May:
12.1 days - Average sunshine days in June:
10.1 days
- Average sunshine days in July:
11.9 days - Average sunshine days in August:
10.9 days - Average sunshine days in September:
9.1 days - Average sunshine days in October:
16.9 days - Average sunshine days in November:
17.6 days - Average sunshine days in December:
17.6 days
The month with the most sunshine days is January (19.3 days).
The month with the least sunshine days is September (9.1 days).
Average UV index
Rock Island, TX
The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).
Average cloud cover
Rock Island, TX
The month with the most cloud cover is February (Cloud cover 50).
The month with the least cloud cover is August (Cloud cover 30).
Average visibility
Rock Island, TX
The months with the highest visibility are January, February, March, April, August, September, October, November and December (6mi).
The months with the lowest visibility are May, June and July (5mi).
Rock Island, Texas, USA
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