Rock River, MI
Unincorporated community in Alger County, Michigan
Rock River is a small unincorporated community in Alger County, Michigan. It is 8.3 miles S of Chatham, the nearest town. Its ZIP code is 49806.
Rock River at a glance
- State
- Michigan
- County
- Alger County
- ZIP code
- 49806
- Nearest town
- Chatham (8.3 mi)
- Time zone
- America/Detroit
- Coordinates
- 46.4639, -86.9131
Weather in Rock River now
Loading the National Weather Service forecast…
Rock River weather by the hour
Rock River weather for the next 7 days
Source: National Weather Service (NOAA) · forecast for the coordinates of Rock River.
This week in Rock River
Sunrise, sunset and moon in Rock River
What is the weather usually like in Rock River?
Köppen climate classification, calculated from the 1991–2020 normals
- Julywarmest month · 78°F average high
- Februarycoldest month · 7°F average low
- 35.1 inprecipitation per year · 891 mm
- 164.0 insnowfall per year · 417 cm
Average high and low temperature (°F)
Average precipitation (inches)
Best time to visit Rock River: June to September, with mild temperatures and fewer rainy days.
Source: NOAA NCEI U.S. Climate Normals 1991–2020, station CHATHAM EXP FARM 2, MI US (USC00201486), adjusted for the elevation of Rock River.
Rock River weather month by month
Sunrise and sunset in Rock River through the year
| Month | Sunrise | Sunset | Daylight |
|---|---|---|---|
| January | 8:25 AM | 5:29 PM | 9 h 4 min |
| February | 7:48 AM | 6:14 PM | 10 h 25 min |
| March | 7:58 AM | 7:54 PM | 11 h 56 min |
| April | 6:58 AM | 8:36 PM | 13 h 38 min |
| May | 6:11 AM | 9:16 PM | 15 h 4 min |
| June | 5:52 AM | 9:44 PM | 15 h 51 min |
| July | 6:08 AM | 9:38 PM | 15 h 30 min |
| August | 6:45 AM | 8:59 PM | 14 h 14 min |
| September | 7:24 AM | 8:01 PM | 12 h 36 min |
| October | 8:03 AM | 7:02 PM | 10 h 58 min |
| November | 7:48 AM | 5:16 PM | 9 h 28 min |
| December | 8:22 AM | 5:02 PM | 8 h 40 min |
Times for the 15th of each month, local time (America/Detroit).
What is the weather like in Rock River?
Rock River has a warm-summer humid continental climate. The warmest month is July, with an average high of 78°F (26°C), and the coldest is February, with average lows of 7°F (-14°C).
It gets about 35.1 inches (891 mm) of precipitation a year. The wettest month is October and the driest is February. Snow is common: about 164 inches fall in an average year.
The best time to visit Rock River 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 Rock River
The closest live webcam is Marquette › West: Northern Center, 23.9 miles W of Rock River.
Webcams: Windy.com. Distances in a straight line from Rock River.
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Map of Rock River, MI
Tap any road on the map to see it in Street View below. Map: © OpenStreetMap contributors.
Rock River Street View
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Open in Google Maps ›Towns near Rock River
Other communities near Rock River
Questions about Rock River
Where is Rock River, MI?
Rock River is an unincorporated community in Alger County, Michigan, 8.3 miles S of Chatham.
What county is Rock River in?
Rock River is in Alger County, Michigan.
What is the ZIP code of Rock River, MI?
The ZIP code for Rock River is 49806.
What is the nearest town to Rock River?
Chatham, 8.3 miles away.
Are there webcams near Rock River?
Yes. The closest is Marquette › West: Northern Center, 23.9 miles away.
What is the hottest month in Rock River?
July, with an average high of 78°F (26°C).
What is the coldest month in Rock River?
February, with an average low of 7°F (-14°C).
How much does it rain in Rock River?
About 35.1 inches (891 mm) a year; the wettest month is October.
Does it snow in Rock River?
Yes, about 164 inches of snow fall in an average year.
When is the best time to visit Rock River?
June to September, when temperatures are most pleasant and rainy days are fewer.
What climate does Rock River have?
Warm-summer humid continental (Köppen Dfb).
Last updated: