When to paint a house exterior in Helena, MT
When to paint in Helena, MT
A short season: book early and expect weather delays. The painting window is June to August, and even that is thin, with 0 good months a year. The best month is August, at about 8 painting days. Book a painter by April.
If you want the house done in June to August, call for quotes in April or earlier; a job pushed past August is likely to wait until next year. For a deck, the months with enough staining days to spare are Jun, Jul, Aug.
- under 1Jan
- under 1Feb
- under 1Mar
- under 1Apr
- 1May
- 6Jun
- 7Jul
- 8Aug
- 3Sep
- 1Oct
- under 1Nov
- under 1Dec
Month by month
| Month | Painting days | Staining days | With low-temp paint | Avg low / high |
|---|---|---|---|---|
| January | under 1 | under 1 | 1 | 13° / 35°F |
| February | under 1 | under 1 | 1 | 15° / 38°F |
| March | under 1 | under 1 | 3 | 24° / 50°F |
| April | under 1 | under 1 | 6 | 31° / 60°F |
| May | 1 | 1 | 16 | 41° / 70°F |
| June | 6 | 6 | 16 | 49° / 81°F |
| July | 7 | 4 | 9 | 55° / 91°F |
| August | 8 | 6 | 12 | 54° / 89°F |
| September | 3 | 3 | 19 | 45° / 78°F |
| October | 1 | under 1 | 12 | 34° / 62°F |
| November | under 1 | under 1 | 2 | 22° / 47°F |
| December | under 1 | under 1 | 1 | 15° / 38°F |
Deck stain does best in June. Low-temperature paint adds about 70 days a year here.
Towns near Helena compared
6 get fewer, down to 5 a year. A gap like that between towns is usually elevation, a coast or a lake, which is why a painter from a few towns over can be on a different schedule.
| Place | From Helena | Painting days a year | Window | Station |
|---|---|---|---|---|
| Butte-Silver Bow, MT | 57 mi southwest | 5 | none reliable | Bert Mooney Airport |
| Belgrade, MT | 69 mi southeast | 6 | none reliable | Gallatin Field Airport |
| Great Falls, MT | 71 mi northeast | 15 | none reliable | Great Falls International Air |
| Bozeman, MT | 78 mi southeast | 6 | none reliable | Gallatin Field Airport |
| Missoula, MT | 97 mi west | 11 | none reliable | Missoula International Airport |
| Kalispell, MT | 156 mi northwest | 10 | none reliable | Glacier Park International Airport |
How Helena ranks in MT
Of 8 MT places with 10,000 people or more, Helena (population 34,729, 6th largest) ranks 2nd for painting days, 16 days above the state median of 10. The longest season in the state is Billings, 38 days, 175 miles east. The shortest is Butte-Silver Bow at 5. Switching to low-temperature paint here is worth 70 extra days, more than most of the summer months on their own.
Where these numbers come from
Daily records from Helena Regional Airport (2.7 miles away), 2015 to 2024, NOAA Global Summary of the Day. A month is good at 12+ painting days and possible at 6+.