Idaho Forecast: Warmer Midweek, Showers Likely

The US National Weather Service in Boise, Idaho has issued the following forecast for the remainder of the week. Temperatures will trend warmer by midweek with a chance of showers each day except for Wednesday. There is also a slight chance of thunderstorms later in the week.

For Tuesday, May 20th, Baker City is expected to have a morning low of 37°F and an afternoon high of 58°F; Boise will see lows of 45°F and highs of 64°F; Burns will have lows of 32°F and highs of 60°F; Caldwell is forecast with lows of 45°F and highs of 66°F; and Fairfield is set for a low of 32°F and a high of 58°F.

On Wednesday, May 21st, Baker City’s forecast is a low of 30°F with a high of 66°F, while Boise is expected to reach a low of 40°F and a high of 70°F. Burns is forecast for a low of 30°F and a high of 65°F. Caldwell will see a low of 40°F and a high of 70°F, and Fairfield will experience a low of 27°F and a high of 63°F.

Thursday, May 22nd brings warmer conditions. In Baker City, temperatures will range from a low of 40°F to a high of 62°F. Boise will have a low of 51°F and a high of 73°F. Burns is expected to be between 40°F and 66°F, while Caldwell will have a range from 49°F to 74°F. Fairfield’s temperatures are forecast from 36°F to 68°F.

For Friday, May 23rd, Baker City is expected to have a low of 35°F and a high of 69°F. Boise will see temperatures from 46°F to 76°F. Burns is forecast with a low of 45°F and a high of 68°F, while Caldwell will range between 45°F and 78°F. Fairfield is expected to have a low of 32°F and a high of 72°F.

On Saturday, May 24th, Baker City’s forecast is a low of 39°F and a high of 68°F. In Boise, the temperatures will range from 50°F to 75°F. Burns is set for a low of 38°F with a high of 67°F, Caldwell will see a low of 49°F and a high of 77°F, and Fairfield’s forecast did not include Saturday’s temperatures.



Source: US National Weather Service Boise Idaho

Source Type: Weather

Source Location:

May 19, 2025 at 10:00 PM Weather

Caldwell

3833 S Development Ave, # 3807, Boise, ID

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