Weather forecast for 10 daysMerrillville, IN
Weather forecast for the weekend
Sunday Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 13mphSSW 199°
- Humidity: 53%
- UV index: 4
- Sunrise: 7:04 am CDT
- Sunset: 6:03 pm CDT
- details ▼
Today, on Sunday, October 18, uninterrupted sunshine is anticipated.
Temperature readings are expected to span from a high of an enjoyable 66.2°F to a low of an icy 37.4°F.
Today's maximum temperature is forecasted to be slightly warmer than the common October peak of 61.3°F.
Sunrise will be at 7:04 am and sunset at 6:03 pm; the daylight will last for 10h and 59min.
Temperature readings are expected to span from a high of an enjoyable 66.2°F to a low of an icy 37.4°F.
Today's maximum temperature is forecasted to be slightly warmer than the common October peak of 61.3°F.
Sunrise will be at 7:04 am and sunset at 6:03 pm; the daylight will last for 10h and 59min.
10-day overview
Daily temperatures
Warmest day: Sunday 25.10. 75°C.
Coldest day: today 66°C.
Coldest day: today 66°C.
Chance of precipitation
Highest chance: Tuesday 27.10. 19%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 66°F
- 37°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 13mphSSW 199°
- Humidity: 53%
- UV index: 4
- Sunrise: 7:04 am CDT
- Sunset: 6:03 pm CDT
- details ▼
- Monday
- Oct 19, 2026
- 70°F
- 39°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 4mphS 174°
- Humidity: 54%
- UV index: 4
- Sunrise: 7:06 am CDT
- Sunset: 6:02 pm CDT
- details ▼
- Tuesday
- Oct 20, 2026
- 70°F
- 41°F
Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 6mphENE 78°
- Humidity: 57%
- UV index: 4
- Sunrise: 7:07 am CDT
- Sunset: 6:00 pm CDT
- details ▼
- Wednesday
- Oct 21, 2026
- 72°F
- 45°F
Sunny
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 4mphSSE 162°
- Humidity: 60%
- UV index: 4
- Sunrise: 7:08 am CDT
- Sunset: 5:59 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 72°F
- 43°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 6mphNNE 15°
- Humidity: 62%
- UV index: 4
- Sunrise: 7:09 am CDT
- Sunset: 5:57 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 72°F
- 45°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 6mphESE 119°
- Humidity: 62%
- UV index: 4
- Sunrise: 7:10 am CDT
- Sunset: 5:56 pm CDT
- details ▼
- Saturday
- Oct 24, 2026
- 72°F
- 46°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphSSE 149°
- Humidity: 58%
- UV index: 3
- Sunrise: 7:11 am CDT
- Sunset: 5:55 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 75°F
- 50°F
Partly Cloudy
- Precip. probability: 3%
- Precipitation: 0"
- Wind: 6mphS 186°
- Humidity: 54%
- UV index: 3
- Sunrise: 7:13 am CDT
- Sunset: 5:53 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 72°F
- 50°F
Partly Cloudy
- Precip. probability: 7%
- Precipitation: 0"
- Wind: 7mphWNW 301°
- Humidity: 57%
- UV index: 3
- Sunrise: 7:14 am CDT
- Sunset: 5:52 pm CDT
- details ▼
- Tuesday
- Oct 27, 2026
- 68°F
- 50°F
Partly Cloudy
- Precip. probability: 19%
- Precipitation: 0"
- Wind: 7mphE 98°
- Humidity: 64%
- UV index: 3
- Sunrise: 7:15 am CDT
- Sunset: 5:50 pm CDT
- details ▼
Looking ahead to the next ten days, a combination of sun-filled and cloudy weather is forecasted.
Rainfall is not anticipated in Merrillville in the upcoming period.
In the upcoming period, the maximum temperature will range between 66.2°F and 75.2°F, while the lowest night temperatures will vary significantly, as the overnight lows will vary from 37.4°F to 50°F.
Expect the warmest day on next Sunday, with temperatures peaking at 75.2°F; today is the coldest day, with a maximum temperature of 66.2°F.
Rainfall is not anticipated in Merrillville in the upcoming period.
In the upcoming period, the maximum temperature will range between 66.2°F and 75.2°F, while the lowest night temperatures will vary significantly, as the overnight lows will vary from 37.4°F to 50°F.
Expect the warmest day on next Sunday, with temperatures peaking at 75.2°F; today is the coldest day, with a maximum temperature of 66.2°F.
Updated: Oct 18, 2026 @ 10:47:51 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate
Frequently asked questions
On Sunday, sunny conditions are expected to continue.
Today, the highest temperature will be 66.2°F, while the lowest temperature will be 37.4°F.
Today, the maximum temperature will be relatively higher than the average highest temperature in October. The lowest temperature will be uncommonly lower than the average low of 47.1°F.
Today, the maximum temperature will be relatively higher than the average highest temperature in October. The lowest temperature will be uncommonly lower than the average low of 47.1°F.
On Sunday, in Merrillville, sunrise will be at 7:04 am and sunset at 6:03 pm (CDT).
Today, the daylight will last for 10h and 59min.
