Weather in Boise in April 2026
Average weather
Average temperature in Boise in April
The temperature in April is +63°F on average, with a range between a maximum of +90°F during the day and a minimum of +25°F at night.
The average maximum temperature goes up 64% by the end of the month, compared with the beginning of the month, from +48°F to +90°F.
Is Boise warm or cold in April?
Boise is typically mild in April.
Maximum temperatures go up compared to the previous month from +55°F to +64°F. The minimum temperature also goes up from +36°F to +41°F.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how April is compared to other months in Boise:
Climate in Boise in April
| March | April | May | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +55°F | +64°F | +73°F | ||||
| Min. temperature | ||||||
| +10°F | +25°F | +28°F | ||||
| Max. temperature | ||||||
| +79°F | +91°F | +100°F | ||||
| Rainfall | ||||||
| 49 mm | 41 mm | 42 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 59% | 52% | 49% | ||||
| Air pressure | ||||||
| 1015 HPa | 1013 HPa | 1011 HPa | ||||
| Sunny days | ||||||
| 9 | 10 | 12 | ||||
| Cloudy days | ||||||
| 7 | 7 | 7 | ||||
| Rainy days | ||||||
| 13 | 13 | 11 | ||||
| Snowy days | ||||||
| 2 | 0 | 0 | ||||
April weather is still as good as in March. It’s getting warmer as April arrives. The average maximum temperature goes up from +55°F to +64°F during the day. As April arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 49 mm to 41 mm. It feels drier, as humidity decreases from 59% to 52%. The average wind speed doesn’t change much during April, staying around 3 m/s. The good news is there are likely to be more sunny days in April, from 9 to 10.
May brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Boise is gradually decreasing during April, going from 4 m/s to 2 m/s over the course of the month.
Rain
Snow
Here’s how April is compared with other months in the amount of snow, total mm:
How was the weather last April in Boise?
Climate Change Over the Years
The climate in Boise in April has not changed that much over the last 43 years.
The average temperature was the lowest in 1985 (+61°F) and the highest in 2012 (+69°F). The driest year was 2002 with only 219 mm of rainfall, and the wettest year was 2024 with 653 mm.
FAQ
Is April a good time to visit Boise?
Can you sunbathe in Boise in April?
Is Boise rainy in April?
Is it sunny in Boise in April?
Other cities in USA
Monthly weather in Boise
Source of the data
For this page, we’ve looked at the typical weather in Boise, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
