Merrillville Weather Forecast
- 60
- 74
Chance Rain Showers
- 59
- 78
Increasing Clouds
- 59
- 73
Rain Showers
- 54
- 67
Slight Chance Rain Showers
- 56
- 71
Chance Rain Showers
- 57
- 75
Chance Thunderstorms
- 57
- 72
Slight Chance Thunderstorms
Today 19 Jun Lake
Partly cloudy. Temperatures in the mid 70s. Northwest Winds around 10 Mph.
Tonight 19 Jun Lake
Mostly cloudy early in the Evening, then becoming partly cloudy. A slight chance of Thunderstorms early in the evening. A chance of Showers. Lows around 60. West Winds 5 to 10 Mph. Chance of precipitation 50 percent.
Merrillville Temperature Statistics
June Temperature
Gary Regional Airport (9.3 miles)
Lowest 3 June, 2026
50 °FAverage June
69.8 °FHighest 10 June, 2026
93.2 °F
Climate (2021–2026)
Gary Regional Airport (9.3 miles)
Average Low 2021–2026
43.8 °FAverage 2021–2026
51.7 °FAverage High 2021–2026
61.3 °F