Sullivan, CO
Unincorporated community in Arapahoe County, Colorado
Sullivan is a small unincorporated community in Arapahoe County, Colorado. It is 0.8 miles NE of Four Square Mile, the nearest town. Its ZIP code is 80231.
Sullivan at a glance
- State
- Colorado
- County
- Arapahoe County
- ZIP code
- 80231
- Nearest town
- Four Square Mile (0.8 mi)
- Time zone
- America/Denver
- Coordinates
- 39.6714, -104.8975
Weather in Sullivan now
Loading the National Weather Service forecast…
Sullivan weather by the hour
Sullivan weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Sullivan.
This week in Sullivan
Sunrise, sunset and moon in Sullivan
What is the weather usually like in Sullivan?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 90°F average high
- Januarycoldest month · 17°F average low
- 17.8 inprecipitation per year · 452 mm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Sullivan: May–June and September–October, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station CHERRY CREEK DAM, CO US (USC00051547), adjusted for the elevation of Sullivan.
Sullivan weather month by month
Sunrise and sunset in Sullivan through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 7:16 AM | 5:01 PM | 9 h 44 min |
| February | 6:49 AM | 5:37 PM | 10 h 47 min |
| March | 7:08 AM | 7:07 PM | 11 h 58 min |
| April | 6:20 AM | 7:38 PM | 13 h 18 min |
| May | 5:43 AM | 8:08 PM | 14 h 25 min |
| June | 5:29 AM | 8:30 PM | 15 h 1 min |
| July | 5:43 AM | 8:28 PM | 14 h 44 min |
| August | 6:10 AM | 7:57 PM | 13 h 46 min |
| September | 6:39 AM | 7:09 PM | 12 h 30 min |
| October | 7:08 AM | 6:21 PM | 11 h 13 min |
| November | 6:42 AM | 4:45 PM | 10 h 2 min |
| December | 7:11 AM | 4:37 PM | 9 h 25 min |
Times for the 15th of each month, local time (America/Denver).
What is the weather like in Sullivan?
Sullivan has a humid subtropical climate. The warmest month is July, with an average high of 90°F (32°C), and the coldest is January, with average lows of 17°F (-8°C).
It gets about 17.8 inches (452 mm) of precipitation a year. The wettest month is May and the driest is January.
The best time to visit Sullivan is May–June and September–October. 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 Sullivan
The closest live webcam is Greenwood Village › South-east: Denver Tech Center, 3.3 miles S of Sullivan.
Webcams: Windy.com. Distances in a straight line from Sullivan.
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Map of Sullivan, CO
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Sullivan Street View
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Other communities near Sullivan
Questions about Sullivan
Where is Sullivan, CO?
Sullivan is an unincorporated community in Arapahoe County, Colorado, 0.8 miles NE of Four Square Mile.
What county is Sullivan in?
Sullivan is in Arapahoe County, Colorado.
What is the ZIP code of Sullivan, CO?
The ZIP code for Sullivan is 80231.
What is the nearest town to Sullivan?
Four Square Mile, 0.8 miles away.
Are there webcams near Sullivan?
Yes. The closest is Greenwood Village › South-east: Denver Tech Center, 3.3 miles away.
What is the hottest month in Sullivan?
July, with an average high of 90°F (32°C).
What is the coldest month in Sullivan?
January, with an average low of 17°F (-8°C).
How much does it rain in Sullivan?
About 17.8 inches (452 mm) a year; the wettest month is May.
Does it snow in Sullivan?
Snow is very rare or not recorded at the nearest weather station.
When is the best time to visit Sullivan?
May–June and September–October, when temperatures are most pleasant and rainy days are fewer.
What climate does Sullivan have?
Humid subtropical (Köppen Cfa).
Last updated: