Colchester weather in January
In January, Colchester sees average daytime highs of 27°F and overnight lows near 13°F, with 2.5 in of precipitation across 10.1 wet days and about 9 hours of daylight. It is the 12th-warmest and 11th-wettest month of the year here.
Day-to-day highs hold fairly steady near 27°F through the month. The sky is clear or mostly clear about 15% of the time in January, and the air most often feels dry.
Daylight stretches from about 8 h 42 min at the start of January to 9 h 30 min by month's end. Set against the rest of the year, January is Colchester's 10th-clearest and 3rd-windiest month. For the whole year in context, see Colchester's year-round climate.
- Daytime high
- 27°
- 12th warmest
- Overnight low
- 13°
- 1st coldest
- Precipitation
- 2.5 in
- 10.1 wet days
- Daylight
- 9 hours
- 7:32 AM – 4:32 PM
- Cloud cover
- 72%
- 10th clearest
- Wind
- 7 mph
- 3rd windiest
- Solar energy
- 1.65 kWh/m²
- Travel score
- 0.0
- out of 10
Colchester is town in Chittenden County, Vermont, United States.
- Density
- 112/km²
- people per km²
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in January
Day-to-day highs hold fairly steady near 27°F through the month.
A typical January day in Colchester reaches about 27°F in the afternoon and slips back to 13°F overnight — a 14°F spread between the day's warmth and the night's chill. On most days the high lands between 11°F and 40°F. Set against its neighbours, January runs about 6°F cooler than December and about 2°F cooler than February.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 29 | 29 | 29 | 28 | 28 | 28 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 |
| Avg low (°F) | 17 | 17 | 17 | 16 | 16 | 15 | 15 | 15 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| Avg high (°F) | Avg low (°F) | |
|---|---|---|
| 1 | 29 | 17 |
| 2 | 29 | 17 |
| 3 | 29 | 17 |
| 4 | 28 | 16 |
| 5 | 28 | 16 |
| 6 | 28 | 15 |
| 7 | 28 | 15 |
| 8 | 28 | 15 |
| 9 | 28 | 14 |
| 10 | 27 | 14 |
| 11 | 27 | 14 |
| 12 | 27 | 13 |
| 13 | 27 | 13 |
| 14 | 27 | 13 |
| 15 | 26 | 12 |
| 16 | 26 | 12 |
| 17 | 26 | 12 |
| 18 | 26 | 12 |
| 19 | 26 | 11 |
| 20 | 26 | 11 |
| 21 | 26 | 11 |
| 22 | 26 | 11 |
| 23 | 26 | 11 |
| 24 | 26 | 11 |
| 25 | 26 | 11 |
| 26 | 26 | 11 |
| 27 | 26 | 11 |
| 28 | 26 | 11 |
| 29 | 26 | 11 |
| 30 | 26 | 11 |
| 31 | 26 | 11 |
How January really feels in Colchester
Once humidity and wind are folded in, January averages 0 days that feel above 90°F and 31 that feel at or below 32°F — the comfort signal a plain temperature reading hides.
The story in January is cold — wind chill drags the overnight "feels like" below the raw low.
Colchester weather by month
How January compares with the rest of the year at a glance. January is the 12th-warmest and 11th-wettest month here — the current month is highlighted below.
| Month | High / Low (°F) | Rainfall (inches) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 27° / 13° | 2.5 | 10.1 | 9.3 | 9 | 0.0 |
| Feb | 29° / 13° | 2.2 | 8.9 | 8.1 | 10.1 | 0.0 |
| Mar | 38° / 23° | 2.9 | 11 | 7 | 11.6 | 0.1 |
| Apr | 53° / 36° | 3.4 | 11.6 | 2.7 | 13.2 | 2.7 |
| May | 65° / 46° | 3.4 | 11.9 | 0.1 | 14.6 | 5.6 |
| Jun | 74° / 55° | 3.8 | 12 | 0 | 15.3 | 6.4 |
| Jul | 79° / 61° | 3.3 | 11.8 | 0 | 15 | 6.4 |
| Aug | 77° / 60° | 3.1 | 11.4 | 0 | 13.9 | 6.7 |
| Sep | 69° / 53° | 3.3 | 9.8 | 0 | 12.3 | 6.4 |
| Oct | 56° / 42° | 4.2 | 12.4 | 0.5 | 10.7 | 3.6 |
| Nov | 44° / 32° | 3.2 | 12.5 | 4 | 9.4 | 0.7 |
| Dec | 33° / 22° | 3.0 | 12.1 | 9.3 | 8.7 | 0.0 |
Cloud cover in January
The sky is clear or mostly clear about 15% of the time in January.
Beyond those clear spells, partly cloudy skies cover about 15% of January, with mostly cloudy or overcast conditions the remaining 70%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 23 | 24 | 24 | 25 | 25 | 25 | 25 | 26 | 26 | 27 | 27 | 27 | 27 | 28 | 29 | 29 | 30 | 30 | 31 | 32 | 32 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 34 | 35 | 34 |
| Cloudier (%) | 77 | 76 | 76 | 75 | 75 | 75 | 75 | 74 | 74 | 73 | 73 | 73 | 73 | 72 | 71 | 71 | 70 | 70 | 69 | 68 | 68 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 66 | 65 | 66 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 23 | 77 |
| 2 | 24 | 76 |
| 3 | 24 | 76 |
| 4 | 25 | 75 |
| 5 | 25 | 75 |
| 6 | 25 | 75 |
| 7 | 25 | 75 |
| 8 | 26 | 74 |
| 9 | 26 | 74 |
| 10 | 27 | 73 |
| 11 | 27 | 73 |
| 12 | 27 | 73 |
| 13 | 27 | 73 |
| 14 | 28 | 72 |
| 15 | 29 | 71 |
| 16 | 29 | 71 |
| 17 | 30 | 70 |
| 18 | 30 | 70 |
| 19 | 31 | 69 |
| 20 | 32 | 68 |
| 21 | 32 | 68 |
| 22 | 34 | 66 |
| 23 | 34 | 66 |
| 24 | 34 | 66 |
| 25 | 34 | 66 |
| 26 | 34 | 66 |
| 27 | 34 | 66 |
| 28 | 34 | 66 |
| 29 | 34 | 66 |
| 30 | 35 | 65 |
| 31 | 34 | 66 |
Chance of precipitation in January
Colchester gets around 2.5 in of rain and snow over 10.1 wet days in January. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable precipitation averages around 33% and peaks near 37% on the wettest days, and about 9 days bring snow. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 36 | 36 | 36 | 36 | 36 | 37 | 37 | 37 | 37 | 37 | 36 | 36 | 36 | 36 | 35 | 34 | 34 | 33 | 32 | 31 | 31 | 30 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 28 |
| Snow chance (%) | 31 | 31 | 31 | 31 | 31 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 32 | 31 | 31 | 30 | 30 | 30 | 30 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 |
| Rain chance (%) | Snow chance (%) | |
|---|---|---|
| 1 | 36 | 31 |
| 2 | 36 | 31 |
| 3 | 36 | 31 |
| 4 | 36 | 31 |
| 5 | 36 | 31 |
| 6 | 37 | 32 |
| 7 | 37 | 32 |
| 8 | 37 | 32 |
| 9 | 37 | 32 |
| 10 | 37 | 32 |
| 11 | 36 | 32 |
| 12 | 36 | 32 |
| 13 | 36 | 32 |
| 14 | 36 | 32 |
| 15 | 35 | 31 |
| 16 | 34 | 31 |
| 17 | 34 | 30 |
| 18 | 33 | 30 |
| 19 | 32 | 30 |
| 20 | 31 | 30 |
| 21 | 31 | 29 |
| 22 | 30 | 29 |
| 23 | 29 | 29 |
| 24 | 29 | 28 |
| 25 | 28 | 28 |
| 26 | 28 | 28 |
| 27 | 28 | 27 |
| 28 | 27 | 27 |
| 29 | 27 | 27 |
| 30 | 27 | 27 |
| 31 | 28 | 27 |
Humidity in January
Most of January feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, January lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
| Dry (%) | |
|---|---|
| 1 | 100 |
| 2 | 100 |
| 3 | 100 |
| 4 | 100 |
| 5 | 100 |
| 6 | 100 |
| 7 | 100 |
| 8 | 100 |
| 9 | 100 |
| 10 | 100 |
| 11 | 100 |
| 12 | 100 |
| 13 | 100 |
| 14 | 100 |
| 15 | 100 |
| 16 | 100 |
| 17 | 100 |
| 18 | 100 |
| 19 | 100 |
| 20 | 100 |
| 21 | 100 |
| 22 | 100 |
| 23 | 100 |
| 24 | 100 |
| 25 | 100 |
| 26 | 100 |
| 27 | 100 |
| 28 | 100 |
| 29 | 100 |
| 30 | 100 |
| 31 | 100 |
Wind in January
Winds average 7 mph in January.
Across January, daily wind ranges from about 6 mph on the calmest days to 7 mph at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (mph) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 6 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (mph) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 6 | calm |
| 26 | 6 | calm |
| 27 | 6 | calm |
| 28 | 6 | calm |
| 29 | 6 | calm |
| 30 | 6 | calm |
| 31 | 6 | calm |
Sunrise & sunset in January
Daylight runs from about 8 h 42 min at the start of January to 9 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 48 minutes over January. Sunrise moves from 7:35 AM to 7:21 AM, and sunset from 4:16 PM to 4:51 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 8.7 | 8.7 | 8.7 | 8.7 | 8.7 | 8.8 | 8.8 | 8.8 | 8.8 | 8.8 | 8.9 | 8.9 | 8.9 | 8.9 | 9.0 | 9.0 | 9.0 | 9.0 | 9.1 | 9.1 | 9.1 | 9.2 | 9.2 | 9.2 | 9.3 | 9.3 | 9.3 | 9.4 | 9.4 | 9.5 | 9.5 |
| Sunrise (AM) | 7:35 | 7:35 | 7:35 | 7:35 | 7:35 | 7:35 | 7:35 | 7:35 | 7:35 | 7:34 | 7:34 | 7:34 | 7:33 | 7:33 | 7:33 | 7:32 | 7:32 | 7:31 | 7:31 | 7:30 | 7:29 | 7:29 | 7:28 | 7:27 | 7:26 | 7:26 | 7:25 | 7:24 | 7:23 | 7:22 | 7:21 |
| Sunset (PM) | 4:16 | 4:17 | 4:18 | 4:19 | 4:20 | 4:21 | 4:22 | 4:23 | 4:24 | 4:25 | 4:26 | 4:27 | 4:28 | 4:29 | 4:30 | 4:32 | 4:33 | 4:34 | 4:35 | 4:36 | 4:38 | 4:39 | 4:40 | 4:42 | 4:43 | 4:44 | 4:45 | 4:47 | 4:48 | 4:50 | 4:51 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 8.7 | 7:35 | 4:16 |
| 2 | 8.7 | 7:35 | 4:17 |
| 3 | 8.7 | 7:35 | 4:18 |
| 4 | 8.7 | 7:35 | 4:19 |
| 5 | 8.7 | 7:35 | 4:20 |
| 6 | 8.8 | 7:35 | 4:21 |
| 7 | 8.8 | 7:35 | 4:22 |
| 8 | 8.8 | 7:35 | 4:23 |
| 9 | 8.8 | 7:35 | 4:24 |
| 10 | 8.8 | 7:34 | 4:25 |
| 11 | 8.9 | 7:34 | 4:26 |
| 12 | 8.9 | 7:34 | 4:27 |
| 13 | 8.9 | 7:33 | 4:28 |
| 14 | 8.9 | 7:33 | 4:29 |
| 15 | 9.0 | 7:33 | 4:30 |
| 16 | 9.0 | 7:32 | 4:32 |
| 17 | 9.0 | 7:32 | 4:33 |
| 18 | 9.0 | 7:31 | 4:34 |
| 19 | 9.1 | 7:31 | 4:35 |
| 20 | 9.1 | 7:30 | 4:36 |
| 21 | 9.1 | 7:29 | 4:38 |
| 22 | 9.2 | 7:29 | 4:39 |
| 23 | 9.2 | 7:28 | 4:40 |
| 24 | 9.2 | 7:27 | 4:42 |
| 25 | 9.3 | 7:26 | 4:43 |
| 26 | 9.3 | 7:26 | 4:44 |
| 27 | 9.3 | 7:25 | 4:45 |
| 28 | 9.4 | 7:24 | 4:47 |
| 29 | 9.4 | 7:23 | 4:48 |
| 30 | 9.5 | 7:22 | 4:50 |
| 31 | 9.5 | 7:21 | 4:51 |
Solar energy in January
Average shortwave solar energy reaching the ground each day in January, about 1.65 kWh/m².
For context, solar energy here swings from a low near 1.18 kWh/m² to a high of 5.89 kWh/m² in July across the year — January's 1.65 kWh/m² sits near the bottom.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 1.3 | 1.3 | 1.3 | 1.3 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.4 | 1.5 | 1.5 | 1.5 | 1.6 | 1.6 | 1.6 | 1.7 | 1.7 | 1.7 | 1.8 | 1.8 | 1.8 | 1.9 | 1.9 | 1.9 | 2.0 | 2.0 | 2.0 | 2.1 | 2.1 | 2.1 |
| Level | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Dim | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 1.3 | Dim |
| 2 | 1.3 | Dim |
| 3 | 1.3 | Dim |
| 4 | 1.3 | Dim |
| 5 | 1.4 | Dim |
| 6 | 1.4 | Dim |
| 7 | 1.4 | Dim |
| 8 | 1.4 | Dim |
| 9 | 1.4 | Dim |
| 10 | 1.4 | Dim |
| 11 | 1.5 | Dim |
| 12 | 1.5 | Dim |
| 13 | 1.5 | Dim |
| 14 | 1.6 | Dim |
| 15 | 1.6 | Dim |
| 16 | 1.6 | Dim |
| 17 | 1.7 | Dim |
| 18 | 1.7 | Dim |
| 19 | 1.7 | Dim |
| 20 | 1.8 | Dim |
| 21 | 1.8 | Dim |
| 22 | 1.8 | Dim |
| 23 | 1.9 | Dim |
| 24 | 1.9 | Dim |
| 25 | 1.9 | Dim |
| 26 | 2.0 | Dim |
| 27 | 2.0 | Moderate |
| 28 | 2.0 | Moderate |
| 29 | 2.1 | Moderate |
| 30 | 2.1 | Moderate |
| 31 | 2.1 | Moderate |
Hazard calendar for Colchester
None of Colchester's seasonal hazards are active in January. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Colchester sits in the Atlantic hurricane belt; the season peaks August–October.
Is January a good time to visit Colchester?
Our two travel scores rate January for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
January is a weaker month for outdoor sightseeing in Colchester.
What to pack for Colchester in January
From January's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In January, Colchester sees daytime highs around 27°F and nights near 13°F. Pack a warm layer and a heavy coat. Worth having: rain gear. About 10 days see rain.
UV index in Colchester in January
Clear-sky midday UV in January peaks around 1. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Colchester peaks around July 13 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 22 at about 1 (low).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 2 | 4 | 5 | 7 | 6 | 8 | 3 | 6 | 3 | 2 | 1 |
| Level | Low | Moderate | Moderate | Moderate | High | High | Very high | Moderate | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 2 | Moderate |
| Mar | 4 | Moderate |
| Apr | 5 | Moderate |
| May | 7 | High |
| Jun | 6 | High |
| Jul | 8 | Very high |
| Aug | 3 | Moderate |
| Sep | 6 | High |
| Oct | 3 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Where is Colchester?
Colchester sits at 44.5°N, 73.1°W, 272 ft above sea level, in United States. The nearest listed city is South Burlington, 5.6 mi away.
Topography around Colchester
How much the land rises and falls, and what covers it, within 2, 10 and 50 miles of Colchester.
Within 2 miles, the terrain around Colchester has only modest variations in elevation — a maximum elevation change of 591 ft around an average of 305 ft above sea level; within 10 miles, significant variations in elevation — a maximum elevation change of 1,496 ft; within 50 miles, very significant variations in elevation — a maximum elevation change of 5,266 ft.
The land around Colchester is covered by trees (73%) within 2 miles, trees (56%) and water (23%) within 10 miles, and trees (77%) within 50 miles.
United States travel facts
- Power plugs
- Type A / B
- 120 V · 60 Hz
- Prices
- ≈ 100% of US
- price level, 2025
- GDP per capita
- $90,027
- 2025
- Happiness
- 6.8 / 10
- World Happiness, 2025
- Safe drinking water
- 98%
- of population, 2024
- Homicide rate
- 5.8
- per 100k, 2023
- Road deaths
- 12.7
- per 100k/yr, 2019
- Income group
- High
- World Bank
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Colchester (44.5439°, -73.1479°, elevation 272 ft), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).