Eureka, CO
Unincorporated community in San Juan County, Colorado
Eureka is a small unincorporated community in San Juan County, Colorado. It is 7.3 miles SW of Silverton, the nearest town. Its ZIP code is 81427.
Eureka at a glance
- State
- Colorado
- County
- San Juan County
- ZIP code
- 81427
- Nearest town
- Silverton (7.3 mi)
- Time zone
- America/Denver
- Coordinates
- 37.8797, -107.5644
Weather in Eureka now
Loading the National Weather Service forecast…
Eureka weather by the hour
Eureka weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Eureka.
This week in Eureka
Sunrise, sunset and moon in Eureka
What is the weather usually like in Eureka?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 75°F average high
- Januarycoldest month · -6°F average low
- 23.9 inprecipitation per year · 608 mm
- 172.6 insnowfall per year · 438 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Eureka: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station SILVERTON, CO US (USC00057656), adjusted for the elevation of Eureka.
Eureka weather month by month
Sunrise and sunset in Eureka through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:23 AM | 5:16 PM | 9 h 53 min |
| February | 6:58 AM | 5:50 PM | 10 h 52 min |
| March | 7:19 AM | 7:18 PM | 11 h 59 min |
| April | 6:33 AM | 7:47 PM | 13 h 14 min |
| May | 5:58 AM | 8:14 PM | 14 h 16 min |
| June | 5:45 AM | 8:35 PM | 14 h 49 min |
| July | 5:58 AM | 8:33 PM | 14 h 34 min |
| August | 6:24 AM | 8:04 PM | 13 h 40 min |
| September | 6:51 AM | 7:19 PM | 12 h 28 min |
| October | 7:17 AM | 6:34 PM | 11 h 16 min |
| November | 6:49 AM | 5:00 PM | 10 h 10 min |
| December | 7:17 AM | 4:53 PM | 9 h 36 min |
Times for the 15th of each month, local time (America/Denver).
What is the weather like in Eureka?
Eureka has a subarctic climate. The warmest month is July, with an average high of 75°F (24°C), and the coldest is January, with average lows of -6°F (-21°C).
It gets about 23.9 inches (608 mm) of precipitation a year. The wettest month is August and the driest is June. Snow is common: about 173 inches fall in an average year.
The best time to visit Eureka is June to September. The live forecast on this page comes from the National Weather Service and the climate averages from NOAA’s 1991–2020 U.S. Climate Normals.
Webcams near Eureka
The closest live webcam is Ouray: Red Mountain Pass Webcam 2.2 miles North US550 Webcam North by CDOT, 11.6 miles NW of Eureka.
Webcams: Windy.com. Distances in a straight line from Eureka.
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Map of Eureka, CO
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Eureka Street View
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Questions about Eureka
Where is Eureka, CO?
Eureka is an unincorporated community in San Juan County, Colorado, 7.3 miles SW of Silverton.
What county is Eureka in?
Eureka is in San Juan County, Colorado.
What is the ZIP code of Eureka, CO?
The ZIP code for Eureka is 81427.
What is the nearest town to Eureka?
Silverton, 7.3 miles away.
Are there webcams near Eureka?
Yes. The closest is Ouray: Red Mountain Pass Webcam 2.2 miles North US550 Webcam North by CDOT, 11.6 miles away.
What is the hottest month in Eureka?
July, with an average high of 75°F (24°C).
What is the coldest month in Eureka?
January, with an average low of -6°F (-21°C).
How much does it rain in Eureka?
About 23.9 inches (608 mm) a year; the wettest month is August.
Does it snow in Eureka?
Yes, about 173 inches of snow fall in an average year.
When is the best time to visit Eureka?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Eureka have?
Subarctic (Köppen Dfc).
Last updated: