🌤️ New York, NY 🌤️ Los Angeles, CA 🌤️ Chicago, IL 🌤️ Houston, TX 🌤️ Miami, FL 🌤️ Phoenix, AZ Seattle, WA 57° 🌤️ Denver, CO Toronto, ON 59° Vancouver, BC 60°
WeatherLive › Iowa › Grinnell

Grinnell, IA Weather (50112)

Today Hourly 10-Day Weekend Monthly Radar Air Quality Climate
Current WeatherGrinnell · 9:51 AM CDT
83° | 61°
69°F
Feels like 72°
Sunny
WindE 5 mph · Gusts 6 mph
Precip7% · –
Humidity84% · Dew point 64°
UV index7 High
Air Quality37 Good
Pressure30.03 inHg
Visibility6 mi
Sunrise / Sunset6:24 AM · 8:03 PM · 13h 39m

Weather map — Grinnell

Full radar →
Now
69°
11%
5 mph
10:00
74°
7%
5 mph
11:00
81°
3%
6 mph
12:00
82°
2%
3 mph
13:00
83°
1%
4 mph
14:00
83°
1%
5 mph
15:00
83°
2%
6 mph
16:00
76°
3%
5 mph
17:00
76°
3%
5 mph
18:00
75°
4%
5 mph
19:00
75°
7%
6 mph
20:00
72°
9%
5 mph
21:00
71°
11%
5 mph
22:00
70°
12%
4 mph
23:00
69°
12%
7 mph
00:00
66°
21%
9 mph
01:00
66°
20%
9 mph
02:00
65°
0.02 in
11 mph
03:00
64°
53%
9 mph
04:00
64°
0.03 in
11 mph
05:00
65°
14%
10 mph
06:00
65°
54%
9 mph
07:00
66°
15%
9 mph
08:00
69°
0.02 in
9 mph

Today · Thu 8/20

High 83°
7% / –

Sunny. Winds S at 7 mph.

Tonight · Thu 8/20

Low 64°
11% / –

Sunny. Winds S at 5 mph.

Tomorrow · Fri 8/21

82° | 64°
58% / 0.10 in

Sunny. Winds S at 11 mph.

7-day trend

Grinnell · temperature + precipitation

10-day forecast

Updated 9:51 AM

Details & indices

Wind
5 mph E
Gusts 6 mph
Humidity
84%
Dew point 64°
Pressure
30.03 inHg
Rising
UV index
7 — High
High today
Air Quality
Good
AQI 37 · US EPA
Allergy
None detected
—
Visibility
6 mi
Clear view
Allergy — Grinnell

🌿 Conditions right now

View all →
Birch
None
Grass
None
Oak
None
Alder
None
Hazel
None
Mugwort
None
Ragweed
None

Sun & moon

Sunrise6:24 AM
Sunset8:03 PM
Length of day13h 39m
Moonrise3:11 PM
Moonset11:53 PM
Moon phase🌓 First Quarter · 55%
Next full moonAug 27 Sturgeon Moon
Latitude41.7430°N
Longitude-92.7224°E

Water temps nearby

View all →
No beaches within 50 miles
🌤️No rain expected in the next 90 minutes
Now+30+60+90 min
Minute-by-minute precip · HRRR nowcast

Daily planner

computed from today's forecast
Laundry day
Great
Line-drying weather
Grilling
Great
Fire up the grill
Running
Fair
Lace up outside
Patio
Great
Dinner outdoors
Nearby places in {{REGION}}
🌤️
Des Moines
—
—
Data sources · Thursday, August 20
Where the Grinnell forecast comes from
This page blends NOAA/NWS model guidance with global ensembles for the 10-day outlook, air quality and alerts. Data refreshes every hour, current conditions every 15 minutes. Coordinates: 41.7430°N, -92.7224°.
NBM + global weather models
Updated: 9:51 AM
ZIP codes in Grinnell
📮
50112
Grinnell
 📮
50153
Grinnell
 📮
50157
Grinnell
 📮
50171
Grinnell
 📮
50242
Grinnell
Weather in Grinnell
The 10-day span for Grinnell runs from a high near 87° on Tuesday down to 52° overnight on Thursday. Models drop roughly 0.16 in of precipitation across the stretch — watch Sunday (66%). Wind is the one to watch: gusts to 31 mph around Wednesday. No watches or warnings are active for the area right now. Right now Grinnell is about 13° cooler than nearby Davenport. Longer view: continental plains — big swings and a spring severe-storm season.
Grinnell, IA · Elev 1,014 ft · 41.74°N, 92.72°W · Iowa · Forecast computed for these exact coordinates
Powered by NWS/NOAA guidance, multi-model forecasts and official environmental feeds · NOAA/NWS · EPA AirNow · MET Norway · global models
Updated: 9:51 AM