Tomorrow Hourly Weather Forecast for Caldwell, ID

Hourly Weather | Tomorrow › Tuesday, October 13, 2026

Active Weather Warnings

Frost Advisory

Caldwell, Idaho

12 AM

46°

Feels Like 39°

Humidity: 60%

UV Index: 0

Wind: 9 mph

1 AM

45°

Feels Like 39°

Humidity: 63%

UV Index: 0

Wind: 9 mph

2 AM

45°

Feels Like 39°

Humidity: 65%

UV Index: 0

Wind: 8 mph

3 AM

43°

Feels Like 37°

Humidity: 66%

UV Index: 0

Wind: 8 mph

4 AM

43°

Feels Like 37°

Humidity: 67%

UV Index: 0

Wind: 8 mph

5 AM

43°

Feels Like 37°

Humidity: 67%

UV Index: 0

Wind: 8 mph

6 AM

43°

Feels Like 36°

Humidity: 67%

UV Index: 0

Wind: 8 mph

7 AM

41°

Feels Like 36°

Humidity: 69%

UV Index: 0

Wind: 8 mph

8 AM

39°

Feels Like 36°

Humidity: 71%

UV Index: 0

Wind: 8 mph

9 AM

41°

Feels Like 37°

Humidity: 68%

UV Index: 1

Wind: 8 mph

10 AM

46°

Feels Like 45°

Humidity: 58%

UV Index: 2

Wind: 8 mph

11 AM

52°

Feels Like 50°

Humidity: 49%

UV Index: 3

Wind: 9 mph

12 PM

54°

Feels Like 54°

Humidity: 43%

UV Index: 3

Wind: 10 mph

1 PM

57°

Feels Like 57°

Humidity: 38%

UV Index: 4

Wind: 10 mph

2 PM

61°

Feels Like 61°

Humidity: 34%

UV Index: 3

Wind: 10 mph

3 PM

63°

Feels Like 64°

Humidity: 30%

UV Index: 3

Wind: 10 mph

4 PM

64°

Feels Like 64°

Humidity: 28%

UV Index: 2

Wind: 9 mph

5 PM

66°

Feels Like 64°

Humidity: 27%

UV Index: 1

Wind: 9 mph

6 PM

63°

Feels Like 61°

Humidity: 30%

UV Index: 0

Wind: 8 mph

7 PM

59°

Feels Like 57°

Humidity: 35%

UV Index: 0

Wind: 7 mph

8 PM

55°

Feels Like 54°

Humidity: 43%

UV Index: 0

Wind: 6 mph

9 PM

52°

Feels Like 50°

Humidity: 50%

UV Index: 0

Wind: 6 mph

10 PM

48°

Feels Like 46°

Humidity: 56%

UV Index: 0

Wind: 6 mph

11 PM

46°

Feels Like 45°

Humidity: 61%

UV Index: 0

Wind: 6 mph

Weather Alerts and Warnings for Caldwell

Minor Expected Likely

Frost Advisory

Frost Advisory issued October 12 at 11:25AM MDT until October 14 at 10:00AM MDT by NWS Boise ID

Oct 13, 12:00 AM → Oct 14, 10:00 AM

WHAT: Low temperatures between 33 and 35 degrees Tuesday and
Wednesday mornings will result in frost formation. A 40% chance
temperatures could fall below freezing, 30 to 32 degrees, from
Mountain Home through the Western Magic Valley on Wednesday
morning.

WHERE: Portions of south central and southwest Idaho and southeast
Oregon.

WHEN: From midnight MDT /11 PM PDT/ tonight to 10 AM MDT /9 AM
PDT/ Wednesday.

IMPACTS: Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.

+ Read More

Take steps now to protect tender plants from the cold.

Updated: Oct 12, 5:48 PM Source: NWS Alert

Weather Alerts and Warnings for Caldwell

Frost Advisory

Explore U.S. Weather Trends