Round Lake Beach weather by month

Frost and snow-likely months in Round Lake Beach

Nights in Round Lake Beach average 36°F (2°C) or below in 4 months (January, February, March and December). January, February, March and December combine average lows at or below 32°F (0°C) with 0.4 in (10 mm) or more of monthly precipitation, so precipitation then is likely to fall as snow. The coldest month is January with an average low of 17°F (-9°C) and a record low of -14°F (-25°C).

• January: average low 17°F (-9°C), record low -14°F (-25°C), 1.5 in (37 mm) of precipitation — snow-likely
• February: average low 19°F (-7°C), record low -9°F (-23°C), 1.1 in (27 mm) of precipitation — snow-likely
• March: average low 30°F (-1°C), record low -1°F (-18°C), 2.6 in (67 mm) of precipitation — snow-likely
• December: average low 26°F (-3°C), record low -2°F (-19°C), 1.5 in (37 mm) of precipitation — snow-likely

These records carry temperature and precipitation, not snowfall totals.

Best time to visit Round Lake Beach

The most comfortable time to visit Round Lake Beach is generally May and August to September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around June, totalling about 31.7 in (805 mm) a year.

Travellers who prefer heat should aim for July, when highs average 83°F (29°C). June is the month to avoid if rain would spoil your plans — it averages 4.5 in (115 mm), roughly 4× the rainfall of the driest month (February).