Ada County (Boise)
May
Weather in Ada County for May 2025
Your guide to Ada County weather in May - trends and predictions
With an average of 2 snowy days, Ada County usually enjoys a light touch of snow in May.
According to Ada County snow forecast for May 2025, no snow is expected in the next 2 weeks.The forecast for the next days in Ada County predicts temperatures to be around 25 °F, close to the historical average.
In general, the average temperature in Ada County at the beginning of May is 23.3 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 18.6 °F by the end of May.
Ada County experiences moderate rainfall in May, with an average of 6 rainy days and a total precipitation of 54.7 mm.
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Snow Forecast ❄️
Temperatures
Rain 🌧️
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23
Dry days
6
Rainy days
2
Snow days
16°/7°
Temperatures
20 km/h
Avg max wind
51 %
Avg humidity
Ada County Weather May
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  23° | 2 27° | 3 26° | ||||
| 4  17° | 5  21° | 6 23° | 7 26° | 8 28° | 9 29° | 10 27° |
| 11 28° | 12 27° | 13 20° | 14 23° | 15 20° | 16 25° | 17 16° |
| 18 17° | 19 12° | 20  16° | 21 16° | 22  14° | 23 13° | 24  19° |
| 25 17° | 26 17° | 27 23° | 28  25° | 29 15° | 30 14° | 31 19° |
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Temperatures trend during May in Ada County
See the weather trend as well as the moving average line
May weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| May 1 | Sunny | 23° /4° | 0 mm | 2 | |
| May 2 | Sunny | 27° /5° | 0 mm | 2.1 | |
| May 3 | Sunny | 26° /6° | 0 mm | 1.9 | |
| May 4 | Patchy rain possible | 17° /10° | 0.3 mm | 1.5 | |
| May 5 | Partly cloudy | 21° /8° | 0 mm | 0 | |
| May 6 | Sunny | 23° /10° | 0 mm | 5 | |
| May 7 | Sunny | 26° /13° | 0 mm | 5 | |
| May 8 | Sunny | 28° /16° | 0 mm | 6 | |
| May 9 | Sunny | 29° /15° | 0 mm | 6 | |
| May 10 | Patchy rain possible | 27° /18° | 0.2 mm | 5 | |
| May 11 | Patchy rain possible | 28° /13° | 0.2 mm | 4 | |
| May 12 | Partly cloudy | 27° /15° | 0 mm | 6 | |
| May 13 | Sunny | 20° /7° | 0 mm | 4 | |
| May 14 | Partly cloudy | 23° /10° | 0 mm | 5 | |
| May 15 | Sunny | 20° /10° | 0 mm | 6 | |
| May 16 | Sunny | 25° /13° | 0 mm | 7 | |
| May 17 | Sunny | 16° /9° | 0 mm | 5 | |
| May 18 | Partly cloudy | 17° /5° | 0 mm | 5 | |
| May 19 | Sunny | 12° /5° | 0 mm | 4 | |
| May 20 | Thundery outbreaks possible | 16° /4° | 0 mm | 4 | |
| May 21 | Partly cloudy | 16° /5° | 1.5 mm | 5 | |
| May 22 | Moderate or heavy rain with thunder | 14° /5° | 16.8 mm | 3 | |
| May 23 | Patchy rain possible | 13° /3° | 0 mm | 3 | |
| May 24 | Overcast | 19° /8° | 0 mm | 4 | |
| May 25 | Patchy rain possible | 17° /8° | 1.4 mm | 4 | |
| May 26 | Sunny | 17° /6° | 0 mm | 5 | |
| May 27 | Overcast | 23° /11° | 0 mm | 5 | |
| May 28 | Patchy light rain with thunder | 25° /15° | 2.6 mm | 6 | |
| May 29 | Partly cloudy | 15° /10° | 0.8 mm | 5 | |
| May 30 | Sunny | 14° /5° | 0 mm | 4 | |
| May 31 | Sunny | 19° /9° | 0 mm | 5 | |
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Important Notice
Our weather forecast for Ada County in May is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Ada County forecast closer to your planned date for the most up-to-date weather information.
Ada County in May - FAQ
What are the expected maximum and minimum temperatures in Ada County during May?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 7°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Ada County during May?
Moderate rainfall is anticipated in Ada County during May, with a total of 54.7 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
Will it snow in Ada County in May 2025?
Ada County experiences an average snowfall of 1.89 cm during May, occurring over 2 days.
What are the typical wind conditions in Ada County during May?
The average wind speed in Ada County during May is 20 km/h, suggesting breezy to windy conditions, depending on your activities.
May rainfall patterns in Ada County
Explore the daily rainfall trends and prepare for Ada Countys May weather 💧
UV exposure in Ada County during May
Stay informed about UV levels for safe outdoor activities throughout the month of May ☀️
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Where is Ada County?Get accurate weather forecasts for Ada County, located at latitude 43.614 and longitude -116.203. Stay updated with localized weather information tailored for Ada County.
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