Weather forecast for tomorrowHammer, SD

Weather forecast for tomorrow

Monday Oct 19, 2026

  • 66°F
  • 39°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 10mphENE 76°
  • Humidity: 54%
  • UV index: 3
  • Sunrise: 7:50 am CDT
  • Sunset: 6:35 pm CDT
  • ▼
Tomorrow, on Monday, sunshine is also forecasted under mostly clear skies.
Significant variations in temperature are anticipated, peaking at an enjoyable 66.2°F and dropping to a low of a cold 39.2°F.
The anticipated high is warmer and better reflects September's normal temperature profile than that of October.
Sunrise will be at 7:50 am and sunset at 6:35 pm; tomorrow's daylight will last for 10h and 45min.

Hourly overview

Hourly temperatures

Warmest hour: 3 pm 64°C.
Coldest hour: 6 am 37°C.

Chance of precipitation

Highest chance: 6 am - 9 am 3%.

Hourly weather forecast

  • 12 am
  • 45°F
  • Feels like:
    41°F
Mostly Clear
Mostly Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphN 354°
  • Humidity: 65%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 2 am
  • 41°F
  • Feels like:
    37°F
Mostly Clear
Mostly Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 5mphN 356°
  • Humidity: 73%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 4 am
  • 37°F
  • Feels like:
    34°F
Mostly Clear
Mostly Clear
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 5mphN 5°
  • Humidity: 82%
  • Pressure: 30.27"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 6 am
  • 37°F
  • Feels like:
    34°F
Partly Cloudy
Partly Cloudy
  • Precip. probability: 3%
  • Precipitation: 0"
  • Wind: 4mphNNE 15°
  • Humidity: 87%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunrise: 7:50 am
  • 8 am
  • 37°F
  • Feels like:
    36°F
Sunny
Sunny
  • Precip. probability: 4%
  • Precipitation: 0"
  • Wind: 3mphNNE 31°
  • Humidity: 86%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 am
  • 48°F
  • Feels like:
    45°F
Sunny
Sunny
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphENE 62°
  • Humidity: 67%
  • Pressure: 30.33"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 12 pm
  • 57°F
  • Feels like:
    57°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 8mphE 84°
  • Humidity: 45%
  • Pressure: 30.3"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 2 pm
  • 64°F
  • Feels like:
    63°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphE 97°
  • Humidity: 38%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 3
  • ▼
  • 4 pm
  • 64°F
  • Feels like:
    64°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 9mphE 97°
  • Humidity: 36%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 1
  • ▼
  • 6 pm
  • 61°F
  • Feels like:
    61°F
Sunny
Sunny
  • Precip. probability: 0%
  • Precipitation: 0"
  • Wind: 7mphE 100°
  • Humidity: 42%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Sunset: 6:35 pm
  • 8 pm
  • 54°F
  • Feels like:
    52°F
Clear
Clear
  • Precip. probability: 1%
  • Precipitation: 0"
  • Wind: 6mphESE 114°
  • Humidity: 60%
  • Pressure: 30.21"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
  • 10 pm
  • 48°F
  • Feels like:
    46°F
Clear
Clear
  • Precip. probability: 2%
  • Precipitation: 0"
  • Wind: 6mphSE 127°
  • Humidity: 75%
  • Pressure: 30.24"Hg
  • Visibility: 10mi
  • UV index: 0
  • ▼
Tomorrow, primarily dry and sunny and occasionally cloudy weather is expected.
The temperature will vary between the lowest temperature of 37.4°F and the highest temperature of 64.4°F. The warmest part of the day will be from 2 pm to 5 pm.
The forecasted maximum is more comparable to September's typical high of 72°F than the average for October. The night temperature will be similar to the standard October low of 40.1°F.
Updated: Oct 18, 2026 @ 08:14:47 UTC
Published by: Weather U.S. | About Us
Data Sources | weather.com | Weather
Weather Forecasting & Climate

Frequently asked questions

Tomorrow, in Hammer, expect sunny weather with a crisp, clear sky.

Tomorrow, the highest temperature will be 66.2°F, while the lowest temperature will be 39.2°F.
The maximum temperature will be significantly higher than the average highest temperature of 54.9°F in October. The lowest temperature will be in line with the average low of 40.1°F.

On Monday, in Hammer, sunrise will be at 7:50 am and sunset at 6:35 pm (CDT).

Tomorrow in Hammer, the daylight will last for 10h and 45min.