UTC Offset
UTC-05:00
Round Lake, United States Snapshot 2026
Where is Round Lake?
Round Lake, United States
- Continent
- Americas
- Country
- United States
- City
- Round Lake
- Population
- 18.5K
- Elevation
- 243 m
- Coordinates
- 42.35°, -88.09°
Round Lake is a city in United States with a population of approximately 18.5K. Average temperatures range from -7°C (20°F) in January to 27°C (80°F) in July. The best time to visit is June, July, August, September, October. The city sits at an elevation of 243 m above sea level.
Time in Round Lake right now
Open full time & time zone page 23:08 08
Monday, June 15, 2026
IANA time zone
America/Chicago
Daylight saving
DST in effect
CST / CDT
Next DST change
November 1
backward -1h
Live weather in Round Lake
Daylight in Round Lake today
View full sunrise & sunset page Sunrise
Sunset
Day length
15h 16m
Climate normals for Round Lake
Long-term monthly averages based on historical data.
January
Poor 
February
Poor March
Poor April
Poor May
Good June best
Excellent July best
Excellent August best
Excellent September best
Excellent October best
Good November
Poor December
Poor | Month | Temp | Feels Like | Rain | Sun | Humidity | UV | Status | Details |
|---|---|---|---|---|---|---|---|---|
| January | 0°C / -7°C | -5°C / -12°C | 9days (65 mm) Wet | 5.1h Fair | 73% Muggy | 2.1 Moderate | Poor | View Details |
| February | 2°C / -5°C | -3°C / -11°C | 8days (53 mm) Wet | 6.9h Fair | 69% Muggy | 3.4 Moderate | Poor | View Details |
| March | 8°C / 0°C | 4°C / -5°C | 11days (88 mm) Wet | 7.8h Good | 69% Muggy | 4.5 Moderate | Poor | View Details |
| April | 13°C / 4°C | 10°C / 0°C | 13days (113 mm) Wet | 8.9h Good | 68% Muggy | 5.3 High | Poor | View Details |
| May | 19°C / 10°C | 18°C / 8°C | 13days (121 mm) Wet | 10.3h Excellent | 72% Muggy | 6.5 High | Good | View Details |
| June best | 25°C / 16°C | 26°C / 16°C | 12days (90 mm) Wet | 11.9h Excellent | 71% Muggy | 7 High | Excellent | View Details |
| July best | 27°C / 19°C | 30°C / 20°C | 10days (89 mm) Wet | 12.1h Excellent | 74% Muggy | 7 High | Excellent | View Details |
| August best | 26°C / 19°C | 28°C / 20°C | 10days (79 mm) Wet | 11.4h Excellent | 74% Muggy | 6.4 High | Excellent | View Details |
| September best | 23°C / 16°C | 24°C / 15°C | 10days (74 mm) Wet | 9.6h Good | 72% Muggy | 5.3 High | Excellent | View Details |
| October best | 16°C / 10°C | 14°C / 6°C | 10days (102 mm) Wet | 7.3h Good | 70% Muggy | 3.7 Moderate | Good | View Details |
| November | 8°C / 2°C | 5°C / -2°C | 8days (56 mm) Wet | 6.1h Fair | 69% Muggy | 2.4 Moderate | Poor | View Details |
| December | 3°C / -3°C | -2°C / -9°C | 9days (59 mm) Wet | 5.1h Fair | 72% Muggy | 1.8 Low | Poor | View Details |
Monthly Temperatures
HighLow
Line chart showing monthly temperatures. Jan: 0°C / -7°C . Feb: 2°C / -5°C . Mar: 8°C / 0°C . Apr: 13°C / 4°C . May: 19°C / 10°C . Jun: 25°C / 16°C . Jul: 27°C / 19°C . Aug: 26°C / 19°C . Sep: 23°C / 16°C . Oct: 16°C / 10°C . Nov: 8°C / 2°C . Dec: 3°C / -3°C .
Monthly Rainfall
Rainfall
Bar chart showing monthly rainfall. Jan: 65 mm. Feb: 53 mm. Mar: 88 mm. Apr: 113 mm. May: 121 mm. Jun: 90 mm. Jul: 89 mm. Aug: 79 mm. Sep: 74 mm. Oct: 102 mm. Nov: 56 mm. Dec: 59 mm.
Monthly Humidity
Humidity
Line chart showing monthly humidity. Jan: 73%. Feb: 69%. Mar: 69%. Apr: 68%. May: 72%. Jun: 71%. Jul: 74%. Aug: 74%. Sep: 72%. Oct: 70%. Nov: 69%. Dec: 72%.
Monthly Wind Speed
Wind SpeedGusts
Bar chart showing monthly wind speed. Jan: 23 km/h . Feb: 24 km/h . Mar: 23 km/h . Apr: 23 km/h . May: 20 km/h . Jun: 19 km/h . Jul: 17 km/h . Aug: 16 km/h . Sep: 19 km/h . Oct: 22 km/h . Nov: 23 km/h . Dec: 23 km/h .
UV Index
UV Index
Bar chart showing monthly UV index. Jan: UV 2. Feb: UV 3. Mar: UV 5. Apr: UV 5. May: UV 7. Jun: UV 7. Jul: UV 7. Aug: UV 6. Sep: UV 5. Oct: UV 4. Nov: UV 2. Dec: UV 2.
Frequently Asked Questions
Round Lake has a population of approximately 18.5K.
The best months to visit Round Lake are June, July, August, September, October, when temperatures are pleasant and rainfall is lower.
Round Lake receives approximately 989mm of rainfall annually across 123 rainy days.
Round Lake is located in United States, in the Americas region.
Round Lake sits at an elevation of 243 m (797 ft) above sea level.