Click on a day for an hourly weather forecast
The temperatures in Mountain Home in May are comfortable with low of 14°C and and high up to 26°C.
You can expect rain for roughly half of the month of May in Mountain Home. We’re expecting roughly 8 to 15 days of rain, so your rubber boots and umbrella are going to see plenty of use this month if you’re keen on staying dry.
Our weather forecast can give you a great sense of what weather to expect in Mountain Home in May 2026.
If you’re planning to visit Mountain Home in the near future, we highly recommend that you review the 14 day weather forecast for Mountain Home before you arrive.
| Month | Temperatures | Rainy Days | Dry Days | Snowy Days | Rainfall | Weather | More details |
|---|---|---|---|---|---|---|---|
| January | 7° / -2° | 5 | 21 | 5 | 107 mm | Bad | Mountain Home in January |
| February | 9° / -1° | 6 | 17 | 6 | 115 mm | Bad | Mountain Home in February |
| March | 15° / 5° | 9 | 20 | 3 | 185 mm | Bad | Mountain Home in March |
| April | 20° / 9° | 7 | 22 | 0 | 199 mm | Ok | Mountain Home in April |
| May | 26° / 14° | 10 | 21 | 0 | 221 mm | Good | Mountain Home in May |
| June | 31° / 18° | 9 | 21 | 0 | 166 mm | Ok | Mountain Home in June |
| July | 33° / 20° | 9 | 22 | 0 | 145 mm | Ok | Mountain Home in July |
| August | 32° / 19° | 8 | 23 | 0 | 133 mm | Ok | Mountain Home in August |
| September | 29° / 16° | 6 | 24 | 0 | 107 mm | Good | Mountain Home in September |
| October | 21° / 10° | 6 | 25 | 0 | 143 mm | Good | Mountain Home in October |
| November | 14° / 4° | 5 | 24 | 1 | 118 mm | Good | Mountain Home in November |
| December | 9° / 1° | 5 | 23 | 3 | 121 mm | Bad | Mountain Home in December |