Climate and monthly weather forecastRock Island, OK
Climate and monthly weather forecast
Weather in January
January, like December, is a frosty winter month in Rock Island, Oklahoma, with temperature in the range of an average high of 48°F (8.9°C) and an average low of 31.6°F (-0.2°C). January is the month when Rock Island experiences its coldest temperatures, averaging a high of 48°F (8.9°C) and a low of 31.6°F (-0.2°C). Weather in January »Weather in February
The last month of the winter, February, is a cool month in Rock Island, Oklahoma, with an average temperature varying between 35.6°F (2°C) and 52.2°F (11.2°C). The shift into February uncovers an average high-temperature of a cool 52.2°F (11.2°C), subtly different from the previous month. Weather in February »Weather in March
The first month of the spring, March, is a refreshing month in Rock Island, Oklahoma, with an average temperature fluctuating between 43.7°F (6.5°C) and 62.1°F (16.7°C). March brings a rise in Rock Island's average high-temperature, moving from a cool 52.2°F (11.2°C) in February to a comfortable 62.1°F (16.7°C). Weather in March »Weather in April
April is a pleasant spring month in Rock Island, Oklahoma, with an average temperature fluctuating between 71.2°F (21.8°C) and 50.7°F (10.4°C). In Rock Island, stepping into April brings a temperature increase, moving up from March's refreshing 62.1°F (16.7°C) to an agreeable 71.2°F (21.8°C). Weather in April »Weather in May
May, the last month of the spring in Rock Island, is a warm month, with an average temperature ranging between max 79.3°F (26.3°C) and min 58.6°F (14.8°C). The start of May is characterized by a subtle increase in the average high-temperature, transitioning from an agreeable 71.2°F (21.8°C) in April to a warm 79.3°F (26.3°C). Weather in May »Weather in June
June, the first month of the summer in Rock Island, is a hot month, with an average temperature ranging between min 68°F (20°C) and max 89.8°F (32.1°C). Rock Island's June weather brings a rise in high-temperatures, moving from a warm 79.3°F (26.3°C) in May to a hot 89.8°F (32.1°C). Weather in June »Weather in July
July, the same as June, in Rock Island, Oklahoma, is a hot summer month, with an average temperature ranging between min 70.7°F (21.5°C) and max 93.4°F (34.1°C). With average high and low temperatures of 93.4°F (34.1°C) and 70.7°F (21.5°C) respectively, July is Rock Island's warmest month. In July, the heat index is appraised at a blazing hot 116.6°F (47°C). Weather in July »Weather in August
August, the last month of the summer in Rock Island, is another tropical month, with temperature in the range of an average low of 69.4°F (20.8°C) and an average high of 92.3°F (33.5°C). The advent of August presents an average high-temperature of a still hot 92.3°F (33.5°C), maintaining a close correlation with the preceding month. 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 varying between 63°F (17.2°C) and 85.1°F (29.5°C). September's arrival signals a moderate reduction in the average high-temperature, easing from a tropical 92.3°F (33.5°C) in August to a warm 85.1°F (29.5°C). Weather in September »Weather in October
October, like September, is another pleasant autumn month in Rock Island, Oklahoma, with an average temperature ranging between max 72.5°F (22.5°C) and min 52°F (11.1°C). In the transition to October, Rock Island observes a drop in the average high-temperature, moving from a moderately hot 85.1°F (29.5°C) in September to a pleasant 72.5°F (22.5°C). Weather in October »Weather in November
November, the last month of the autumn in Rock Island, is another refreshing month, with temperature in the range of an average low of 42.1°F (5.6°C) and an average high of 60.1°F (15.6°C). A decrease in the average high-temperature is observed during November, shifting from an agreeable 72.5°F (22.5°C) in October to a refreshing 60.1°F (15.6°C). Weather in November »Weather in December
December, the first month of the winter in Rock Island, is also a fresh month, with an average temperature fluctuating between 50.5°F (10.3°C) and 35.4°F (1.9°C). The move into December indicates a reduction in the average high-temperature, down from November's mild 60.1°F (15.6°C) to a fresh 50.5°F (10.3°C). Weather in December »Updated: Aug 6, 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
With its average high temperature of 48°F (8.9°C) and a low of 31.6°F (-0.2°C), January is regarded as the coldest month.
The month with the least rainfall is January, when the rain falls for 9.5 days and typically collects 2.05" (52mm) of precipitation.
Throughout the year, there are 149.7 rainfall days, and 35.08" (891mm) of precipitation is accumulated.
January through March, November and December are months with snowfall.
In Rock Island, during the entire year, snow falls for 5.1 days and aggregates up to 3.15" (80mm) of snow.
January and December, with an average of 5.5h of sunshine, are months with the least sunshine.
February is the month with the most snowfall. Snow falls for 1.9 days and accumulates 1.06" (27mm) of snow.
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.
April through October are months without snowfall.
With an average relative humidity of 77%, May is the most humid month.
May is the month with the most rainfall. Rain falls for 15.2 days and accumulates 4.49" (114mm) of precipitation.
June has the longest days of the year, with an average of 14h and 30min of daylight.
June and July, with an average maximum UV index of 7, are months with the highest UV index.
Rock Island's temperatures tend to reach their peak averages in July, with a high of 93.4°F (34.1°C) and a low of 70.7°F (21.5°C).
The months with the most sunshine are July and August, with an average of 10.8h of sunshine.
The least humid month is August, with an average relative humidity of 69%.
With an average of 9h and 48min of daylight, December has the shortest days of the year.
With an average maximum UV index of 2, December is the month with the lowest UV index.
Average temperature
Rock Island, OK
The warmest month (with the highest average high temperature) is July (93.4°F).
The month with the lowest average high temperature is January (48°F).
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (31.6°F).
Average pressure
Rock Island, OK
- Average pressure in January:
30.17"Hg - Average pressure in February:
30.11"Hg - Average pressure in March:
30.05"Hg - Average pressure in April:
29.94"Hg - Average pressure in May:
29.95"Hg - Average pressure in June:
29.93"Hg
- Average pressure in July:
29.97"Hg - Average pressure in August:
29.96"Hg - Average pressure in September:
30.01"Hg - Average pressure in October:
30.04"Hg - Average pressure in November:
30.13"Hg - Average pressure in December:
30.14"Hg
The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed
Rock Island, OK
- Average wind speed in January:
6.7mph - Average wind speed in February:
7.1mph - Average wind speed in March:
7.5mph - Average wind speed in April:
7.8mph - Average wind speed in May:
6.6mph - Average wind speed in June:
5.7mph
- Average wind speed in July:
4.9mph - Average wind speed in August:
4.8mph - Average wind speed in September:
5.2mph - Average wind speed in October:
6.2mph - Average wind speed in November:
6.8mph - Average wind speed in December:
6.3mph
The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).
Average humidity
Rock Island, OK
The month with the highest relative humidity is May (77%).
The month with the lowest relative humidity is August (69%).
Average rainfall
Rock Island, OK
- Average rainfall in January:
2.05" - Average rainfall in February:
2.24" - Average rainfall in March:
3.19" - Average rainfall in April:
3.74" - Average rainfall in May:
4.49" - Average rainfall in June:
2.6"
- Average rainfall in July:
2.68" - Average rainfall in August:
3.27" - Average rainfall in September:
2.68" - Average rainfall in October:
3.03" - Average rainfall in November:
2.48" - Average rainfall in December:
2.64"
The wettest month (with the highest rainfall) is May (4.49").
The driest month (with the least rainfall) is January (2.05").
Average rainfall days
Rock Island, OK
- Average rainfall days in January:
9.5 days - Average rainfall days in February:
10.3 days - Average rainfall days in March:
15.4 days - Average rainfall days in April:
14.7 days - Average rainfall days in May:
15.2 days - Average rainfall days in June:
12.2 days
- Average rainfall days in July:
15 days - Average rainfall days in August:
14.9 days - Average rainfall days in September:
12.3 days - Average rainfall days in October:
11.7 days - Average rainfall days in November:
8.8 days - Average rainfall days in December:
9.7 days
The month with the highest number of rainy days is March (15.4 days).
The month with the least rainy days is November (8.8 days).
Average snowfall
Rock Island, OK
The month with the highest snowfall is February (1.06").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days
Rock Island, OK
- Average snowfall days in January:
1.3 days - Average snowfall days in February:
1.9 days - Average snowfall days in March:
0.7 days - Average snowfall days in April:
0.1 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:
0.2 days - Average snowfall days in December:
0.9 days
The month with the highest number of snowfall days is February (1.9 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight / Average sunshine
Rock Island, OK
- Average daylight in January:
10h and 6min - Average daylight in February:
10h and 54min - Average daylight in March:
12h and 0min - Average daylight in April:
13h and 6min - Average daylight in May:
14h and 0min - Average daylight in June:
14h and 30min
- Average daylight in July:
14h and 18min - Average daylight in August:
13h and 24min - Average daylight in September:
12h and 24min - Average daylight in October:
11h and 18min - Average daylight in November:
10h and 18min - Average daylight in December:
9h and 48min
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:
5h and 30min - Average sunshine in February:
5h and 42min - Average sunshine in March:
6h and 42min - Average sunshine in April:
8h and 24min - Average sunshine in May:
9h and 0min - Average sunshine in June:
10h and 36min
- Average sunshine in July:
10h and 48min - Average sunshine in August:
10h and 48min - Average sunshine in September:
9h and 30min - Average sunshine in October:
6h and 12min - Average sunshine in November:
5h and 48min - Average sunshine in December:
5h and 30min
The months with the most sunshine are July and August (Average sunshine: 10h and 48min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).
Average sunshine days
Rock Island, OK
- Average sunshine days in January:
19.1 days - Average sunshine days in February:
14.8 days - Average sunshine days in March:
13.7 days - Average sunshine days in April:
13.7 days - Average sunshine days in May:
13.9 days - Average sunshine days in June:
14.7 days
- Average sunshine days in July:
13.3 days - Average sunshine days in August:
13.8 days - Average sunshine days in September:
16.4 days - Average sunshine days in October:
17.8 days - Average sunshine days in November:
19.3 days - Average sunshine days in December:
19.3 days
The months with the most sunshine days are November and December (19.3 days).
The month with the least sunshine days is July (13.3 days).
Average UV index
Rock Island, OK
The months with the highest UV index are June and July (UV index 7).
The month with the lowest UV index is December (UV index 2).
Average cloud cover
Rock Island, OK
The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 24).
Average visibility
Rock Island, OK
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).
