When to paint a house exterior in Johnstown, CO
When to paint in Johnstown, CO
A short season: book early and expect weather delays. The painting window is August to September, and even that is thin, with 0 good months a year. The best month is September, at about 8 painting days. Book a painter by June.
If you want the house done in August to September, call for quotes in June or earlier; a job pushed past September is likely to wait until next year. For a deck, the months with enough staining days to spare are Jun, Aug, Sep.
- under 1Jan
- under 1Feb
- under 1Mar
- under 1Apr
- 2May
- 6Jun
- 5Jul
- 8Aug
- 8Sep
- 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 | under 1 | 16° / 45°F |
| February | under 1 | under 1 | 1 | 17° / 48°F |
| March | under 1 | under 1 | 3 | 26° / 58°F |
| April | under 1 | under 1 | 10 | 33° / 66°F |
| May | 2 | 2 | 16 | 42° / 72°F |
| June | 6 | 4 | 11 | 52° / 87°F |
| July | 5 | 3 | 6 | 57° / 93°F |
| August | 8 | 4 | 9 | 56° / 91°F |
| September | 8 | 6 | 19 | 49° / 86°F |
| October | 1 | under 1 | 16 | 36° / 70°F |
| November | under 1 | under 1 | 3 | 25° / 57°F |
| December | under 1 | under 1 | 1 | 18° / 48°F |
Deck stain does best in September. Low-temperature paint adds about 64 days a year here.
Towns near Johnstown compared
1 of the 6 nearest places get more painting days, the most in Firestone (36 a year, 11 miles south); 2 get fewer, down to 24 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. Berthoud, Loveland, Windsor are read from the same station as Johnstown, so their numbers match; the real difference is the distance from that station.
| Place | From Johnstown | Painting days a year | Window | Station |
|---|---|---|---|---|
| Berthoud, CO | 3 mi southwest | 30 | August to September | same station |
| Evans, CO | 9 mi east | 24 | June | Greeley-Weld County Airport |
| Greeley, CO | 10 mi northeast | 24 | June | Greeley-Weld County Airport |
| Firestone, CO | 11 mi south | 36 | June to August | Erie Municipal Airport |
| Loveland, CO | 11 mi northwest | 30 | August to September | same station |
| Windsor, CO | 12 mi north | 30 | August to September | same station |
How Johnstown ranks in CO
Of 53 CO places with 10,000 people or more, Johnstown (population 20,639, 32nd largest) ranks 36th for painting days, 6 days below the state median of 36. The longest season in the state is Cañon City, 71 days, 130 miles south. The shortest is Glenwood Springs at 12. Switching to low-temperature paint here is worth 64 extra days, more than most of the summer months on their own.
Where these numbers come from
Daily records from Fort Collins Loveland Airport (11.3 miles away), 2015 to 2024, NOAA Global Summary of the Day. A month is good at 12+ painting days and possible at 6+.