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Round Lake BeachUSIllinois, United States | ||
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Round Lake BeachUSIllinois, United States | |||||||||||||||
Round Lake Beach
DetailsHeat Seeker Score
Heat Seeker Score is a composite score designed for those who crave hot, sunny weather with minimal rainfall. It prioritizes high temperatures and abundant sunshine.
Use the detailed page for charts, component scores, and weather inputs behind every monthly ranking.
Calculations are based on the last 8 years of historical weather data.
In Round Lake Beach, temperatures peak in July with a maximum of 79.5°F and a minimum of 65.3°F, marking the warmest month.
Conversely, January is the coldest month with a maximum of only 29.3°F and a minimum of 18.9°F, highlighting a significant seasonal variation in temperatures across the year.
Maximum Temperatures
| Period | Round Lake Beach |
|---|---|
| Jan | 28.8°F |
| Feb | 33.8°F |
| Mar | 45.0°F |
| Apr | 54.5°F |
| May | 64.2°F |
| Jun | 75.9°F |
| Jul | 80.1°F |
| Aug | 79.3°F |
| Sep | 74.8°F |
| Oct | 61.2°F |
| Nov | 45.7°F |
| Dec | 36.1°F |
| Average | 56.6°F |
Minimum Temperatures
| Period | Round Lake Beach |
|---|---|
| Jan | 18.1°F |
| Feb | 21.4°F |
| Mar | 31.3°F |
| Apr | 39.6°F |
| May | 49.3°F |
| Jun | 60.3°F |
| Jul | 65.5°F |
| Aug | 64.0°F |
| Sep | 58.8°F |
| Oct | 46.6°F |
| Nov | 33.3°F |
| Dec | 26.1°F |
| Average | 42.9°F |
In Round Lake Beach, sunlight hours increase steadily from January to June, peaking at 7.8 hours in June, while precipitation remains relatively low across these months, with slight variations.
Interestingly, the summer months (June to August) show consistent sun exposure, each exceeding 7 hours, while precipitation levels hover around 0.12 to 0.14 inches, indicating a drier period.
From September to December, both sun hours and precipitation decline, but November has the least sunshine hours at 3.7, with only 0.09 inches of precipitation, suggesting a shift towards darker, wetter conditions as winter approaches.
Sunny Weather
| Period | Round Lake Beach |
|---|---|
| Jan | 2.4 hours/day |
| Feb | 3.1 hours/day |
| Mar | 3.4 hours/day |
| Apr | 3.6 hours/day |
| May | 5.0 hours/day |
| Jun | 7.5 hours/day |
| Jul | 7.2 hours/day |
| Aug | 7.1 hours/day |
| Sep | 6.9 hours/day |
| Oct | 4.4 hours/day |
| Nov | 3.6 hours/day |
| Dec | 2.6 hours/day |
| Average | 4.7 hours/day |
Precipitation Levels
| Period | Round Lake Beach |
|---|---|
| Jan | 0.1in |
| Feb | 0.1in |
| Mar | 0.2in |
| Apr | 0.2in |
| May | 0.2in |
| Jun | 0.2in |
| Jul | 0.2in |
| Aug | 0.1in |
| Sep | 0.1in |
| Oct | 0.1in |
| Nov | 0.1in |
| Dec | 0.1in |
| Average | 0.1in |
Wind Speed
| Period | Round Lake Beach |
|---|---|
| Jan | 13.3mph |
| Feb | 13.7mph |
| Mar | 14.7mph |
| Apr | 14.5mph |
| May | 12.4mph |
| Jun | 11.8mph |
| Jul | 10.0mph |
| Aug | 10.1mph |
| Sep | 11.1mph |
| Oct | 13.2mph |
| Nov | 13.6mph |
| Dec | 13.3mph |
| Average | 12.6mph |
Humidity
| Period | Round Lake Beach |
|---|---|
| Jan | 80.4% |
| Feb | 79.4% |
| Mar | 72.7% |
| Apr | 73.2% |
| May | 74.3% |
| Jun | 73.7% |
| Jul | 77.1% |
| Aug | 74.8% |
| Sep | 71.8% |
| Oct | 69.3% |
| Nov | 72.0% |
| Dec | 75.9% |
| Average | 74.5% |
In Round Lake Beach, Illinois, the earliest sunrise occurs at 5:16 AM in June, reflecting the city's summer peak, while the latest sunrise at 7:17 AM is recorded in January, indicating the winter months' shorter days.
The sunset times show significant variation as well, with the latest sunset at 8:30 PM in June and the earliest at 4:22 PM in December.
Day length is notably shorter in December, with only 9 hours and 7 minutes of daylight, compared to a lengthy 15 hours and 13 minutes in June, emphasizing the stark contrast between summer and winter in this region.
Sunrise Time
| Period | Round Lake Beach |
|---|---|
| Jan | 7:17 |
| Feb | 6:48 |
| Mar | 6:41 |
| Apr | 6:11 |
| May | 5:31 |
| Jun | 5:16 |
| Jul | 5:31 |
| Aug | 6:01 |
| Sep | 6:33 |
| Oct | 7:07 |
| Nov | 6:52 |
| Dec | 7:14 |
| Average | 6:24 |
Sunset Time
| Period | Round Lake Beach |
|---|---|
| Jan | 16:47 |
| Feb | 17:25 |
| Mar | 18:40 |
| Apr | 19:35 |
| May | 20:08 |
| Jun | 20:30 |
| Jul | 20:25 |
| Aug | 19:51 |
| Sep | 19:01 |
| Oct | 18:09 |
| Nov | 16:39 |
| Dec | 16:22 |
| Average | 18:36 |
Useful Day Length
| Period | Round Lake Beach |
|---|---|
| Jan | 9:29 hours |
| Feb | 10:25 hours |
| Mar | 11:40 hours |
| Apr | 12:35 hours |
| May | 13:08 hours |
| Jun | 13:30 hours |
| Jul | 13:25 hours |
| Aug | 12:51 hours |
| Sep | 12:01 hours |
| Oct | 11:02 hours |
| Nov | 9:39 hours |
| Dec | 9:08 hours |
| Average | 11:36 hours |
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