Flood Warning — Brookings County, SD, Hamlin County, SD Heat Advisory — Brown, SD, Marshall, SD, Roberts, SD, Walworth, SD, Edmunds, SD, Day, SD, Dewey, SD, Potter, SD, Faulk, SD, Spink, SD, Clark, SD, Codington, SD, Grant, SD, Hamlin, SD, Deuel, SD, Stanley, SD, Sully, SD, Hughes, SD, Hyde, SD, Hand, SD, Jones, SD, Lyman, SD, Buffalo, SD 9:00 PM

Hamlin County, South Dakota, United States

Last updated: 7:35 PM CDT  ·  Refresh
33°C
Feels like 34°
Mostly Clear
▲ 35°  /  ▼ 17°
Wind
7 mph NNW
Humidity
41%
Dew Point
20°
Pressure
28.08 inHg
Visibility
10 mi
UV Index
3.6
Cloud Cover
15%
Sunrise
5:59 AM
Sunset
9:09 PM
Drag to pan · double-click to forecast a point
WeatherAI™ Analysis

WeatherAI Analysis: Hamlin County is currently mostly clear at 33°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2169 J/kg) — isolated convective development possible. Sunrise: 5:59AM · Sunset: 9:09PM.

Alerts

Flood Warning
Brookings County, SD, Hamlin County, SD
Expires
Heat Advisory
Brown, SD, Marshall, SD, Roberts, SD, Walworth, SD, Edmunds, SD, Day, SD, Dewey, SD, Potter, SD, Faulk, SD, Spink, SD, Clark, SD, Codington, SD, Grant, SD, Hamlin, SD, Deuel, SD, Stanley, SD, Sully, SD, Hughes, SD, Hyde, SD, Hand, SD, Jones, SD, Lyman, SD, Buffalo, SD
Expires 9:00 PM
52 AQI · Moderate Dominant: PM2.5 Air Quality
Hourly Forecast · Next 24 Hours
Now
33°
13%
8 PM
31°
27%
9 PM
28°
23%
10 PM
27°
21%
11 PM
26°
7%
12 AM
24°
3%
1 AM
23°
3%
2 AM
22°
3%
3 AM
22°
3%
4 AM
21°
3%
5 AM
17°
3%
6 AM
17°
3%
7 AM
18°
3%
8 AM
20°
3%
9 AM
22°
3%
10 AM
23°
3%
11 AM
24°
3%
12 PM
26°
3%
1 PM
29°
3%
2 PM
30°
3%
3 PM
31°
3%
4 PM
30°
3%
5 PM
31°
3%
6 PM
30°
3%
7-Day Forecast
Tonight
35° 17°
Mostly Clear with a 21% chance of rain.
Sat
32° 17°
Mostly Clear.
Sun
34° 18°
Partly Cloudy.
Mon
37° 18°
Partly Cloudy with a 28% chance of rain.
Tue
28° 13°
Clear.
Wed
29° 11°
Clear.
Thu
29° 13°
Rain, 28% chance.
TimeTempConditionsPrecipWindHumidity
Now 33° Mostly Clear 13% 7 mph NNW 41%
8 PM 31° Mostly Clear 27% 9 mph NNE 51%
9 PM 28° Mostly Clear 23% 11 mph NNE 62%
10 PM 27° Mostly Clear 21% 12 mph NE 67%
11 PM 26° Mostly Clear 7% 11 mph NE 69%
12 AM 24° Mostly Clear 3% 10 mph NE 69%
1 AM 23° Mostly Clear 3% 9 mph NE 71%
2 AM 22° Partly Cloudy 3% 9 mph NE 72%
3 AM 22° Partly Cloudy 3% 8 mph NE 75%
4 AM 21° Mostly Cloudy 3% 8 mph NE 78%
5 AM 17° Mostly Cloudy 3% 8 mph NE 80%
6 AM 17° Partly Cloudy 3% 8 mph NE 82%
7 AM 18° Partly Cloudy 3% 9 mph NE 76%
8 AM 20° Partly Cloudy 3% 10 mph ENE 66%
9 AM 22° Partly Cloudy 3% 10 mph ENE 54%
10 AM 23° Mostly Clear 3% 10 mph ENE 45%
11 AM 24° Clear 3% 10 mph ENE 39%
12 PM 26° Clear 3% 9 mph ENE 33%
1 PM 29° Clear 3% 9 mph ENE 30%
2 PM 30° Mostly Clear 3% 9 mph NE 29%
3 PM 31° Mostly Clear 3% 10 mph NE 28%
4 PM 30° Mostly Clear 3% 10 mph NE 28%
5 PM 31° Mostly Clear 3% 10 mph ENE 30%
6 PM 30° Mostly Clear 3% 10 mph ENE 31%
15-Day Forecast
Today
7/17
Mostly Clear
21%
17°
35°
Sat
7/18
Mostly Clear
3%
17°
32°
Sun
7/19
Partly Cloudy
14%
18°
34°
Mon
7/20
Partly Cloudy
28%
18°
37°
Tue
7/21
Clear
3%
13°
28°
Wed
7/22
Clear
8%
11°
29°
Thu
7/23
Rain
28%
13°
29°
Fri
7/24
Rain
28%
13°
29°
Sat
7/25
Drizzle
44%
13°
31°
Sun
7/26
Rain
68%
17°
31°
Mon
7/27
Drizzle
60%
16°
32°
Tue
7/28
Drizzle
60%
19°
33°
Wed
7/29
Drizzle
60%
18°
33°
Thu
7/30
Drizzle
60%
18°
32°
Fri
7/31
Drizzle
60%
18°
32°
52
Moderate
U.S. Air Quality Index · Dominant: PM2.5
50 100 150 200

Air quality is acceptable. Unusually sensitive people should consider limiting prolonged outdoor exertion.

Pollutant Breakdown · Today
PM2.5
Fine particulate matter
Dominant
52 AQI 9.6 µg/m³
O3
Ground-level ozone
34 AQI 38 ppb
3-Day Outlook
DayAQICategoryO₃PM2.5
Today 52 Moderate 34 52
Sun 42 Good 30 42
Mon 50 Good 30 50
About the Air Quality Index
0–50 Good
51–100 Moderate
101–150 Unhealthy for Sensitive Groups
151–200 Unhealthy
201–300 Very Unhealthy
301–500 Hazardous

The U.S. AQI runs 0–500. The overall value equals the highest individual pollutant sub-index, and the dominant pollutant is the one driving it. PM2.5 (fine particles) is reported in µg/m³ and ozone (O3) in ppb. Forecast source: NWS NAQFC.

1000850700500400300250200150100 -40-30-20-10010203040 0.41247101624 LCLLFCEL0°C Temperature (°C) Pressure (hPa)
Temp Dewpoint Parcel (SB) CAPE CIN Dry adiabat Moist adiabat Mixing ratio
RAP
Valid Fri Jul 17, 23:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE2274 J/kg
MLCAPE3042 J/kg
MUCAPE3728 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-5.9
Kinematics
0–6 km Shear12 kt
0–1 km Shear2 kt
Eff. Shear20 kt
0–1 km SRH-9
0–3 km SRH-13
Eff. SRH-13
Storm Motion249° @ 16 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado0.0
STP (eff)0.0
Supercell0.0
K-Index39.8
Thermo & Levels
PWAT1.75 in
0–3 km LR8.0 °C/km
700–500 LR6.4 °C/km
Total Totals53.0
LCL787 hPa
LFC951 hPa
EL166 hPa
Freezing Lvl14,400 ft