Temperature
Cold by day, freezing at night.
Calais is usually most comfortable in August and September. Typical daytime highs range from 28–78°F across the year. Rain is frequent in many months.

Cold by day, freezing at night.
Some precipitation is expected this month.
A mix of sunshine and cloud.
Humidity is rarely noticeable in the cool air.
In November, afternoons feel about 35° and nights feel near 27°.
Mostly cloudy skies this month.
Calm winds are typical in November.
November late afternoons are around 42°F, easing to about 38°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 28 | 12 | 3.7 | 11 | 6.0 | 75 |
| Feb | 31 | 14 | 3.2 | 9 | 7.2 | 72 |
| Mar | 39 | 23 | 3.9 | 11 | 7.9 | 69 |
| Apr | 51 | 35 | 3.6 | 12 | 8.6 | 68 |
| May | 63 | 45 | 3.5 | 12 | 9.4 | 70 |
| Jun | 72 | 54 | 3.8 | 12 | 10.2 | 75 |
| Jul | 78 | 60 | 3.2 | 11 | 11.0 | 76 |
| Aug | 77 | 60 | 3.1 | 10 | 10.4 | 76 |
| Sep | 69 | 53 | 3.8 | 9 | 8.7 | 79 |
| Oct | 56 | 42 | 4.6 | 11 | 6.9 | 78 |
| Nov | 45 | 32 | 4.2 | 10 | 5.6 | 78 |
| Dec | 34 | 20 | 4.6 | 12 | 5.3 | 78 |
Similar climates
Want a side-by-side climate view? Compare Calais with New York City.
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 27, 2026
Data & methodology