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 at the beginning of the month.The forecast for the first days of May 2025 in Ada County predicts temperatures to be around 22 °F, close to the historical average.
In general, the average temperature in Ada County at the beginning of May is 21.6 °F. As the month progressed, temperatures tended to noticeably 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  24° | 2 26° | 3  23° | ||||
| 4 16° | 5  18° | 6 22° | 7 22° | 8 27° | 9 26° | 10 28° |
| 11 25° | 12 13° | 13  22° | 14 18° | 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 | 24° /4° | 0 mm | 2.1 | |
| May 2 | Sunny | 26° /12° | 0 mm | 2.2 | |
| May 3 | Moderate rain | 23° /12° | 19 mm | 0 | |
| May 4 | Moderate rain | 16° /7° | 7.1 mm | 3 | |
| May 5 | Patchy rain possible | 18° /9° | 0.6 mm | 3 | |
| May 6 | Sunny | 22° /10° | 0 mm | 5 | |
| May 7 | Sunny | 22° /10° | 0 mm | 5 | |
| May 8 | Sunny | 27° /12° | 0 mm | 5 | |
| May 9 | Sunny | 26° /15° | 0 mm | 6 | |
| May 10 | Sunny | 28° /14° | 0 mm | 6 | |
| May 11 | Patchy rain possible | 25° /16° | 3.2 mm | 4 | |
| May 12 | Patchy rain possible | 13° /7° | 0.6 mm | 3 | |
| May 13 | Partly cloudy | 22° /14° | 0 mm | 6 | |
| May 14 | Sunny | 18° /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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