UTC Offset
UTC-05:00
Rock Island, United States Snapshot 2026
Where is Rock Island?
Rock Island, United States
- Continent
- Americas
- Country
- United States
- City
- Rock Island
- Population
- 38.6K
- Elevation
- 171 m
- Coordinates
- 41.51°, -90.58°
Rock Island is a city in United States with a population of approximately 38.6K. Average temperatures range from -8°C (18°F) in January to 29°C (85°F) in July. The best time to visit is May, June, July, August, September. The city sits at an elevation of 171 m above sea level.
Time in Rock Island right now
Open full time & time zone page 05:59 59
Tuesday, June 16, 2026
IANA time zone
America/Chicago
Daylight saving
DST in effect
CST / CDT
Next DST change
November 1
backward -1h
Live weather in Rock Island
Daylight in Rock Island today
View full sunrise & sunset page Sunrise
Sunset
Day length
15h 10m
Climate normals for Rock Island
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Poor April
Fair May best
Excellent June best
Excellent July best
Excellent August best
Excellent September best
Excellent October
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 0°C / -8°C | -5°C / -13°C | 8days (53 mm) Wet | 5.4h Fair | 74% Muggy | 2.3 Moderate | Poor | View Details |
| February | 4°C / -6°C | -1°C / -11°C | 7days (47 mm) Good | 7.3h Good | 68% Muggy | 3.6 Moderate | Poor | View Details |
| March | 11°C / 1°C | 7°C / -4°C | 10days (93 mm) Wet | 7.8h Good | 67% Muggy | 4.6 Moderate | Poor | View Details |
| April | 16°C / 6°C | 14°C / 2°C | 12days (105 mm) Wet | 8.9h Good | 65% Muggy | 5.6 High | Fair | View Details |
| May best | 22°C / 13°C | 22°C / 11°C | 13days (124 mm) Wet | 10.2h Excellent | 69% Muggy | 6.8 High | Excellent | View Details |
| June best | 28°C / 19°C | 30°C / 19°C | 10days (109 mm) Wet | 12.3h Excellent | 67% Muggy | 7.1 Very High | Excellent | View Details |
| July best | 29°C / 21°C | 32°C / 22°C | 10days (89 mm) Wet | 12h Excellent | 72% Muggy | 7.2 Very High | Excellent | View Details |
| August best | 29°C / 20°C | 31°C / 21°C | 8days (80 mm) Wet | 11.3h Excellent | 70% Muggy | 6.6 High | Excellent | View Details |
| September best | 26°C / 17°C | 27°C / 16°C | 8days (78 mm) Wet | 9.9h Good | 67% Muggy | 5.5 High | Excellent | View Details |
| October | 19°C / 10°C | 17°C / 7°C | 9days (89 mm) Wet | 7.5h Good | 66% Muggy | 4 Moderate | Good | View Details |
| November | 10°C / 2°C | 6°C / -2°C | 6days (49 mm) Good | 6.5h Fair | 69% Muggy | 2.7 Moderate | Poor | View Details |
| December | 4°C / -4°C | 0°C / -8°C | 7days (52 mm) Good | 5.5h Fair | 72% Muggy | 2 Low | Poor | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 0°C / -8°C . Feb: 4°C / -6°C . Mar: 11°C / 1°C . Apr: 16°C / 6°C . May: 22°C / 13°C . Jun: 28°C / 19°C . Jul: 29°C / 21°C . Aug: 29°C / 20°C . Sep: 26°C / 17°C . Oct: 19°C / 10°C . Nov: 10°C / 2°C . Dec: 4°C / -4°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 53 mm. Feb: 47 mm. Mar: 93 mm. Apr: 105 mm. May: 124 mm. Jun: 109 mm. Jul: 89 mm. Aug: 80 mm. Sep: 78 mm. Oct: 89 mm. Nov: 49 mm. Dec: 52 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 74%. Feb: 68%. Mar: 67%. Apr: 65%. May: 69%. Jun: 67%. Jul: 72%. Aug: 70%. Sep: 67%. Oct: 66%. Nov: 69%. Dec: 72%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 20 km/h . Feb: 21 km/h . Mar: 22 km/h . Apr: 23 km/h . May: 20 km/h . Jun: 18 km/h . Jul: 16 km/h . Aug: 15 km/h . Sep: 17 km/h . Oct: 21 km/h . Nov: 21 km/h . Dec: 20 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 4. Mar: UV 5. Apr: UV 6. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 7. Sep: UV 6. Oct: UV 4. Nov: UV 3. Dec: UV 2.
Frequently Asked Questions
Rock Island has a population of approximately 38.6K.
The best months to visit Rock Island are May, June, July, August, September, when temperatures are pleasant and rainfall is lower.
Rock Island receives approximately 968mm of rainfall annually across 108 rainy days.
Rock Island is located in United States, in the Americas region.
Rock Island sits at an elevation of 171 m (561 ft) above sea level.