New York, NY 74° Los Angeles, CA 81° 🌤️ Chicago, IL Houston, TX 89° 🌤️ Miami, FL 🌤️ Phoenix, AZ 🌤️ Seattle, WA Denver, CO 73° Toronto, ON 67° 🌤️ Vancouver, BC
WeatherLiveSouth DakotaGroton

Groton, SD Weather (57445)

Current WeatherGroton · 10:27 PM CDT
87° | 60°
74°F
Feels like 69°
Partly cloudy
WindE 5 mph · Gusts 11 mph
Precip1% · –
Humidity31% · Dew point 42°
UV index7 High
Air Quality25 Good
Pressure30.03 inHg
Visibility6 mi
Sunrise / Sunset6:34 AM · 8:38 PM · 14h 4m

Weather map — Groton

Full radar →
Now
74°
3%
5 mph
23:00
74°
3%
7 mph
00:00
71°
2%
8 mph
01:00
71°
2%
8 mph
02:00
69°
2%
9 mph
03:00
67°
2%
8 mph
04:00
67°
3%
8 mph
05:00
65°
12%
7 mph
06:00
64°
3%
8 mph
07:00
64°
2%
8 mph
08:00
69°
2%
8 mph
09:00
75°
3%
11 mph
10:00
80°
2%
13 mph
11:00
84°
1%
13 mph
12:00
87°
1%
13 mph
13:00
90°
1%
12 mph
14:00
92°
1%
11 mph
15:00
94°
2%
9 mph
16:00
96°
1%
9 mph
17:00
96°
1%
11 mph
18:00
96°
1%
10 mph
19:00
94°
1%
8 mph
20:00
87°
7%
5 mph
21:00
76°
36%
15 mph

Today · Sun 8/16

High 87°
1% / –

Sunny. Winds NW at 9 mph.

Tonight · Sun 8/16

Low 64°
3% / –

Partly cloudy. Winds SE at 7 mph.

Tomorrow · Mon 8/17

96° | 64°
36% / 0.03 in

Sunny. Winds N at 15 mph.

7-day trend

Groton · temperature + precipitation

10-day forecast

Updated 10:27 PM

Details & indices

Wind
5 mph E
Gusts 11 mph
Humidity
31%
Dew point 42°
Pressure
30.03 inHg
Rising
UV index
7 — High
High today
Air Quality
Good
AQI 25 · US EPA
Allergy
Very high
Grass
Visibility
6 mi
Clear view
Allergy — Groton

🌿 Conditions right now

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

Sun & moon

Sunrise6:34 AM
Sunset8:38 PM
Length of day14h 4m
Moonrise11:16 AM
Moonset10:09 PM
Next full moonAug 27 Sturgeon Moon
Latitude45.4475°N
Longitude-98.0987°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}}
🌤️
Sioux Falls
Data sources · Sunday, August 16
Where the Groton 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: 45.4475°N, -98.0987°.
NBM + global weather models
Updated: 10:27 PM
ZIP codes in Groton
📮
57421
Groton
📮
57422
Groton
📮
57430
Groton
📮
57432
Groton
📮
57434
Groton
📮
57439
Groton
📮
57445
Groton
📮
57446
Groton
📮
57449
Groton
📮
57454
Groton
📮
57468
Groton
📮
57474
Groton
Weather in Groton
The 10-day span for Groton runs from a high near 109° on Sunday down to 56° overnight on Wednesday. Models drop roughly 0.36 in of precipitation across the stretch — watch Tuesday (75%). Wind is the one to watch: gusts to 34 mph around Saturday. No active NWS alerts at the moment — quiet on the hazards front. Right now Groton is running about 15° warmer than Fargo. Longer view: four full seasons with serious winter and real summer heat.
Groton, SD · Elev 1,302 ft · 45.45°N, 98.10°W · South Dakota · 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: 10:27 PM