Rock Island, IL weather and climate in 2024
Day
-1 °C
Night
-9 °C
Sea
0 °C
Precipitation
36 mm
in month
Rainy days
8 days
in month
Daylight
9 hours
average
Sunshine
5 hours
average
Humidity
71 %
Day
-1 °C
Night
-9 °C
Sea
0 °C
Precipitation
36 mm
in month
Rainy days
8 days
in month
Daylight
9 hours
average
Sunshine
5 hours
average
Humidity
71 %
Overview: Rock Island, IL
Weather charts for Rock Island, IL
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Weather overview for Rock Island, IL
Weather overview
Rock Island, IL (United States of America) in general has a mild continental climate. The day temperatures range from -1 °C (31 °F) in January to 30 °C (85 °F) in July. Temperatures during the night go from -9 °C (15 °F) in January to 19 °C (66 °F) in July. The driest month is February with just 8 days of rain, on the contrary, the month when it rains the most is May with 12 days of rain.
January weather
The beginning of the descent of the number of rainy days could be noticed, with its value of 8 days in Rock Island, IL, while the descent of the rainfall amount can be observed. The minimum of the day temperature is observable, with its value of -1 °C (31 °F), and the night temperature reaches its minimum as well in this month. The number of sun hours (without clouds) starts to rise, its value is 5 hours.
February weather
The number of rainy days is on its minimum, with its value of 8 days in Rock Island, IL, and the minimum of the rainfall amount can be noticed as well, the value of this measure is 33 mm (1.30 in). The day temperature starts to rise, with its value of 2 °C (35 °F), and the night temperature starts to rise as well. The number of sun hours (without clouds) continues to rise, its value is 6 hours.
March weather
The rise of the day temperature can be observed, with its value being 9 °C (49 °F) in Rock Island, IL, and the night temperature rises similarly to the previous month as well, the value of this measure is -1 °C (30 °F). The beginning of the rise of the number of rainy days could be noticed, with its value of 10 days, and the beginning of the rise of the rainfall amount could be noticed too, the value of this measure is 63 mm (2.50 in). The rise of the number of sun hours (without clouds) can be observed, its value is 6 hours.
April weather
The day temperature continues to rise, the value of this measure is 17 °C (62 °F) in Rock Island, IL, and the night temperature continues to rise too, with its value being 5 °C (41 °F). The rise of the rainfall amount can be observed, and the number of rainy days rises similarly to the previous month as well, with its value being 11 days. The wind speed is on its maximum in April. The minimum of the humidity is observable, the value of this measure is 64 %.
May weather
The day temperature continues to rise, with its value being 22 °C (72 °F) in Rock Island, IL, and the rise of the night temperature can be observed as well, its value is 11 °C (51 °F). The number of rainy days is on its maximum, its value is 12 days, while the rise of the rainfall amount can be observed, the value of this measure is 102 mm (4.02 in). The tourist season is at its beginning. The number of sun hours (without clouds) continues to rise, its value is 8 hours.
June weather
The day temperature continues to rise, the value of this measure is 28 °C (82 °F) in Rock Island, IL, and the night temperature rises similarly to the previous month too, the value of this measure is 16 °C (62 °F). There is pending tourist season this month. The number of rainy days starts to descent, the value of this measure is 11 days, while the rise of the rainfall amount can be observed, with its value of 111 mm (4.37 in). The day length is on its maximum, with its value being 15 hours.
July weather
There is pending tourist season in Rock Island, IL. The day temperature reaches its maximum, with its value being 30 °C (85 °F), and the maximum of the night temperature is observable too in July. The number of rainy days continues to descent, with its value of 10 days, while the maximum of the rainfall amount is observable in this month. The maximum of the number of sun hours (without clouds) can be noticed in this month.
August weather
The tourist season is close to its peak in Rock Island, IL. The rainfall amount starts to descent in this month. The day temperature descent's start could be observed, the value of this measure is 28 °C (83 °F), and the night temperature descent's start could be observed as well, with its value of 18 °C (64 °F). The number of sun hours (without clouds) starts to descent, the value of this measure is 9 hours. The wind speed is on its minimum in August.
September weather
The tourist season is close to its peak in Rock Island, IL. The day temperature descents similarly to the previous month, with its value being 25 °C (76 °F), and the night temperature descents similarly to the previous month as well, its value is 13 °C (55 °F). The rainfall amount continues to descent, its value is 90 mm (3.54 in), while the number of rainy days descent's start could be observed, with its value being 9 days. The number of sun hours (without clouds) descents similarly to the previous month, the value of this measure is 7 hours.
October weather
The descent of the day temperature can be observed, with its value being 18 °C (64 °F) in Rock Island, IL, and the descent of the night temperature can be observed as well, with its value being 6 °C (43 °F). The rainfall amount continues to descent, with its value being 74 mm (2.90 in). The descent of the number of sun hours (without clouds) can be observed, its value is 6 hours.
November weather
The day temperature continues to descent, its value is 9 °C (49 °F) in Rock Island, IL, and the night temperature descents similarly to the previous month as well, with its value of 0 °C (32 °F). The rainfall amount continues to descent, its value is 60 mm (2.36 in). The descent of the number of sun hours (without clouds) can be observed, the value of this measure is 4 hours.
December weather
The descent of the day temperature can be observed, its value is 1 °C (34 °F) in Rock Island, IL, and the descent of the night temperature can be observed too, the value of this measure is -7 °C (20 °F). The rainfall amount descents similarly to the previous month, with its value being 50 mm (1.98 in). The humidity reaches its maximum, its value is 75 %. The minimum of the day length can be noticed in this month. The minimum of the number of sun hours (without clouds) can be noticed in December.
FAQs
How windy is Rock Island, IL in April?
An average wind scale that can be expected in Rock Island, IL in April is 5.
Are there good conditions to visit in Rock Island, IL in May?
May is a good month to visit Rock Island, IL. There are some people, who may feel a slight chill at 22 °C (72 °F), but others will feel perfectly fine. The temperature of 11 °C (51 °F) at night may make it better to dine inside or to put on more clothes for a dinner outside.
How many rainy days can I expect in June in Rock Island, IL?
There are 11 days, which are rainy in Rock Island, IL in June, that is, days with precipitation more than 2 mm (0.08 in). Converted to days of the week, this means that it will occur on an average of 2.5 days of the week, or in general - 36 % days. This is a decrease of 1 day compared to the last month. This means 11 % value difference.
What is the temperature in Rock Island, IL during the day in July?
In Rock Island, IL in July, the average daily temperatures will be 30 °C (85 °F). The ideal temperature for enjoying sunbathing by the water and a good temperature for other activities. For some people, it will be too hot in the direct sunlight and the stay may not be so pleasant. Don't forget to pack flip-flops, sunscreen, and a hand fan if necessary - it may come in handy.
Is it hot in Rock Island, IL in August?
In August in Rock Island, IL, you will enjoy nice warm weather, but it will also be pleasant and you probably won't feel hot.
Is there a wet season in September in Rock Island, IL?
No, there is no wet season in September in Rock Island, IL - you can expect 9 days of rain during the month.
How many sunny hours can I expect in October in Rock Island, IL?
In Rock Island, IL in October, you can expect around 6 hours of sunshine. This is a decrease of 1 hour compared to the last month. This means 15 % value difference.
We make the most from 40 years of historical weather data to predict the best weather conditions.
Deciding on where to go for a holiday is hard sometimes. Get inspired by the most popular destinations.
We aggregate data from combining multiple weather sources to ensure accuracy of the highest order.