Weather forecast for 10 daysMerrillville, IN
Weather forecast for the weekend
Sunday Oct 18, 2026
- 64°F
- 37°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 13mphSSW 200°
- Humidity: 45%
- UV index: 4
- Sunrise: 7:04 am CDT
- Sunset: 6:03 pm CDT
- details ▼
Today, in Merrillville, skies are expected to be clear and full of sunshine.
Day and night temperatures will contrast sharply, ranging from a peak of a breezy 64.4°F to a low of a cold 37.4°F.
Today, the forecasted temperature will match October's typical high of 61.3°F.
Sunrise was at 7:04 am and sunset will be at 6:03 pm; the daylight will last for 10h and 59min.
Day and night temperatures will contrast sharply, ranging from a peak of a breezy 64.4°F to a low of a cold 37.4°F.
Today, the forecasted temperature will match October's typical high of 61.3°F.
Sunrise was at 7:04 am and sunset will be at 6:03 pm; the daylight will last for 10h and 59min.
10-day overview
Daily temperatures
Warmest day: Sunday 25.10. 73°C.
Coldest day: today 64°C.
Coldest day: today 64°C.
Chance of precipitation
Highest chance: Monday 26.10. 15%.
Long-term weather forecast
- Sunday
- Oct 18, 2026
- 64°F
- 37°F
Sunny
- Precip. probability: 1%
- Precipitation: 0"
- Wind: 13mphSSW 200°
- Humidity: 45%
- 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: 5%
- Precipitation: 0"
- Wind: 4mphS 175°
- Humidity: 53%
- 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: 6mphE 80°
- Humidity: 56%
- 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: 6%
- Precipitation: 0"
- Wind: 4mphSSE 166°
- Humidity: 60%
- UV index: 4
- Sunrise: 7:08 am CDT
- Sunset: 5:59 pm CDT
- details ▼
- Thursday
- Oct 22, 2026
- 72°F
- 45°F
Mostly Sunny
- Precip. probability: 6%
- Precipitation: 0"
- Wind: 6mphNE 56°
- Humidity: 62%
- UV index: 4
- Sunrise: 7:09 am CDT
- Sunset: 5:57 pm CDT
- details ▼
- Friday
- Oct 23, 2026
- 72°F
- 43°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
- 48°F
Partly Cloudy
- Precip. probability: 5%
- Precipitation: 0"
- Wind: 7mphSSE 152°
- Humidity: 58%
- UV index: 3
- Sunrise: 7:11 am CDT
- Sunset: 5:55 pm CDT
- details ▼
- Sunday
- Oct 25, 2026
- 73°F
- 52°F
Partly Cloudy
- Precip. probability: 14%
- Precipitation: 0"
- Wind: 6mphSSW 192°
- Humidity: 55%
- UV index: 3
- Sunrise: 7:13 am CDT
- Sunset: 5:53 pm CDT
- details ▼
- Monday
- Oct 26, 2026
- 68°F
- 50°F
Partly Cloudy
- Precip. probability: 15%
- Precipitation: 0"
- Wind: 7mphN 11°
- Humidity: 63%
- 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: 14%
- Precipitation: 0"
- Wind: 7mphE 96°
- Humidity: 62%
- UV index: 3
- Sunrise: 7:15 am CDT
- Sunset: 5:50 pm CDT
- details ▼
Conditions over the next ten days suggest that a combination of dry and sunny and cloud-filled weather is predicted.
Rain is not expected in Merrillville in the upcoming days.
In the upcoming period, the maximum temperature will vary between 64.4°F and 73.4°F, while the fluctuation in night temperatures will be significant, as temperatures overnight will fluctuate from 37.4°F up to 51.8°F.
The warmest day will be next Sunday, with a maximum of 73.4°F; today is the coldest day, with a maximum temperature of 64.4°F.
Rain is not expected in Merrillville in the upcoming days.
In the upcoming period, the maximum temperature will vary between 64.4°F and 73.4°F, while the fluctuation in night temperatures will be significant, as temperatures overnight will fluctuate from 37.4°F up to 51.8°F.
The warmest day will be next Sunday, with a maximum of 73.4°F; today is the coldest day, with a maximum temperature of 64.4°F.
Updated: Oct 18, 2026 @ 13:29:07 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, in Merrillville, sunny conditions are expected to continue.
Today, the highest temperature will be 64.4°F, while the lowest temperature will be 37.4°F.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature today will be notably lower than the average low of 47.1°F.
Today, the maximum temperature will be in line with the average highest temperature in October. The lowest temperature today will be notably lower than the average low of 47.1°F.
On Sunday, in Merrillville, sunrise was at 7:04 am and sunset will be at 6:03 pm (CDT).
In Merrillville, the length of the day today will be 10h and 59min.
