FORECAST CITY
Sign in
Shaded-relief atlas plate of Casco, Michigan: rivers, roads, the city limits and where the water drains.
MICHIGAN · ST. CLAIR COUNTY

Casco

4,327 people, 640 ft above sea level in St. Clair County.

640 ftElevation, city center
4,327People, 2024 estimate
37 sq miLand area
Sunny 72°
Sunny now Dew point 55° · NE 6 mph · high 74°
City of Casco River Interstate 2 miles
Explore the plate Order a print

The Casco plate. Relief from Copernicus GLO-30; rivers and lakes from USGS NHD; watersheds from the USGS Watershed Boundary Dataset; roads and city limits from Census TIGER 2024.

MILE1
TODAY

Today in Casco

NWS forecast and National Blend of Models · updated 1:00 PM EDT
RIGHT NOW St Clair County International Airport (CYZR) · 2:00 PM
Sunny
72° Sunny Feels like 72° · high of 74° near 4 PM
WindNE 6 mphno gusts
Humidity57%falling to 43% this afternoon
Pressure30.05 in →steady
Visibility9 mihazy
CloudsClear
UV index—no forecast
Dew point 55° · Comfortableabout the same for three days
DryComfortableStickyMuggyOppressive
NEXT RAIN
Mostly cloudy
Tomorrow, about 9 PMin about 30 hours · 76% chance · rain
LIKELY AMOUNT0.01–0.2 inmost likely 0.1; 1 in 10 over 0.5
LAST RAINSept. 200.1 in · 9 dry days
ALERTS & OUTLOOKS
No watches or warnings for St. Clair County
NWS Detroit/Pontiac and the Storm Prediction Center · checked 2:48 PM
SUN & MOON
↑ 7:25 AM7:16 PM ↓
11 h 51 m of daylight, 3 minutes less than yesterday
Waning gibbous, 89% lit. The Harvest Moon was full Saturday.
AIR & POLLEN
59
MODERATEAir quality index · fine particles
Tomorrow: None, moderate. No pollen source yet.

The next three days, hour by hour

Sky: clear, cloudy, night Rain likely National Blend of Models
TUESDAY, SEPT. 29
WEDNESDAY, SEPT. 30
THURSDAY, OCT. 1
FRIDAY, OCT. 2
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
2p
5p
8p
11p
2a
5a
8a
11a
clear day
clear day
mostly clear night
partly cloudy night
mostly cloudy night
mostly cloudy night
mostly cloudy day
mostly cloudy day
mostly cloudy day
mostly cloudy day
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
rain
TEMPERATURE °F
72°
58°
70°
63°
71°
57°
CHANCE OF RAIN
80% · 1.00 in Friday overnight 50%
WIND, MPH
0
3
3
0
0
3
6
8
7
6
6
5
5
5
5
7
6
3
0
0
2
5
6
6
HOW IT FEELS · DEW POINT
Comfortable: dew points 49 to 62°

The next seven days, and how sure we are

Forecast, with the range 8 in 10 ensemble members agree on Normal, about 80° / 62°
TUE Sept. 29 Sunny Sunny
74° 56°
0% rain — S 1 A
WED Sept. 30 Chance of showers Chance of showers
72° 61°
50% rain 0.01–0.2″ SSW 6 B
THU Oct. 1 Showers likely Showers likely
73° 55°
80% rain 0.5–1.8″ SW 6 C
FRI Oct. 2 Chance of showers; cooler Chance of showers; cooler
65° 45°
50% rain up to 0.2″ N 2 C
SAT Oct. 3 Mostly sunny Mostly sunny
64° 42°
0% rain — ENE 5 B
SUN Oct. 4 Partly cloudy Partly cloudy
65° 42°
0% rain — NW 5 B
MON Oct. 5 Mostly sunny Mostly sunny
59° 38°
0% rain — N 5 C
How sure are we? AModels agree: highs within 4° BSome spread: within 8° CWide spread: check back
Range from the National Blend of Models percentiles · graded on Forecast Scores
AIR MAIL

Where today’s air came from

The air arriving over Casco about 5,000 feet above the ground was over the northern Rockies three days ago, and over the Great Lakes a day ago, about 1,620 miles back along its path. Most of the nine paths traced from around the city agree. Near the ground the air came from the Great Lakes; at 10,000 feet, from the California coast. Traced back 72 hours through NOAA’s hourly RAP analyses, nine paths at each of three heights.

MILE7
ON THE NETWORK

Around Casco on the Forecast Network

Neighboring plates

Warren MI · 26 MI 26 miles southwest Detroit MI · 34 MI 34 miles southwest Toledo OH · 89 MI 89 miles southwest Cleveland OH · 102 MI 102 miles southeast Grand Rapids MI · 152 MI 152 miles west Buffalo NY · 193 MI 193 miles east
FORECASTCITY
Atlas plate of Casco, Michigan. Explore the plate
MICHIGAN · ST. CLAIR

Casco

4,327 people, 640 ft above sea level in St. Clair County.

640 ftElevation
4,327People
37 sq miLand
Sunny 72°
SunnyDew point 55°
1

Today in Casco

NEXT 15 HOURS
Now clear day 72° 0%
5p mostly sunny 74° 0%
8p mostly clear night 65° 0%
11p partly cloudy night 60° 0%
2a partly cloudy night 59° 0%
5a mostly cloudy night 58° 1%
Mostly cloudy
NEXT RAINTomorrow about 9 PM · 76%
→
Tue0%
Sunny Sunny
56
74
A
Wed50%
Chance of showers Chance of showers
61
72
B
Thu80%
Showers likely Showers likely
55
73
C
Fri50%
Chance of showers; cooler Chance of showers; cooler
45
65
C
Sat0%
Mostly sunny Mostly sunny
42
64
B
Sun0%
Partly cloudy Partly cloudy
42
65
B
Mon0%
Mostly sunny Mostly sunny
38
59
C
Letters show how sure the forecast is: A, models agree; B, some spread; C, check back. Sample data.
·