Temperature
Cold by day, freezing at night.
Portillo is usually most comfortable in January and February. Typical daytime highs range from 27–61°F across the year. Rain varies by season.

Cold by day, freezing at night.
Some snow or mixed precipitation is possible this month.
Plenty of sun this month.
Humidity is rarely noticeable in the cool air.
In November, afternoons feel about 31° and nights feel near 18°.
Partly cloudy skies this month.
Calm winds are typical in November.
November late afternoons are around 37°F, easing to about 34°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 61 | 42 | 1.8 | 11 | 13.6 | 62 |
| Feb | 61 | 42 | 1.2 | 9 | 12.9 | 59 |
| Mar | 58 | 38 | 1.0 | 6 | 11.8 | 58 |
| Apr | 49 | 30 | 1.6 | 6 | 10.7 | 60 |
| May | 37 | 21 | 3.4 | 9 | 9.5 | 63 |
| Jun | 28 | 17 | 6.5 | 11 | 8.2 | 61 |
| Jul | 27 | 16 | 4.0 | 9 | 8.8 | 56 |
| Aug | 29 | 18 | 4.6 | 10 | 9.6 | 57 |
| Sep | 33 | 19 | 3.0 | 9 | 10.6 | 66 |
| Oct | 39 | 23 | 1.8 | 9 | 12.3 | 77 |
| Nov | 46 | 28 | 1.4 | 9 | 13.1 | 78 |
| Dec | 55 | 35 | 1.5 | 11 | 13.8 | 68 |
Similar climates
Want a side-by-side climate view? Compare Portillo with Breckenridge.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Aug 7, 2026
Data & methodology