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Optimist Park, IN Weather Forecast
Optimist Park, IN Weather Forecast Date: 851 PM CDT Fri Oct 02 2026
The area/counties/county of: Lake County In, including the cities of: Gary, Hammond, and Merrillville.or toggle through each period.
Tonight... Clear. Patchy fog late. Cooler. Lows in the mid 40s. Northeast winds 5 to 10 mph.
Saturday... Sunny. Patchy fog early in the morning. Highs in the upper 60s. Southeast winds 5 to 10 mph.
Saturday Night... Mostly clear. Lows in the mid 40s. Southeast winds around 5 mph.
Sunday... Sunny. Highs in the lower 70s. West winds around 5 mph, becoming northwest in the afternoon.
Sunday Night... Clear. Lows in the upper 40s. North winds around 5 mph.
Monday... Sunny. Highs in the mid 60s inland, but only in the lower 60s near the lake. Temperature falling into the upper 50s in the afternoon.
Monday Night... Clear. Lows in the lower 40s.
Tuesday... Sunny. Highs in the upper 60s.
Tuesday Night... Clear. Lows in the upper 40s.
Wednesday... Partly cloudy in the morning, then becoming mostly sunny. Highs in the lower 70s.
Wednesday Night... Partly cloudy. Lows around 50.
Thursday... Partly cloudy in the morning, then becoming mostly sunny. Highs in the lower 70s.
Thursday Night... Partly cloudy in the evening, then clearing. Lows in the lower 50s.
POP = Probability of Precipitation
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