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: 6:31 PM CDT  ·  Refresh
34°C
Feels like 34°
Mostly Clear
▲ 36°  /  ▼ 17°
Wind
7 mph WNW
Humidity
33%
Dew Point
18°
Pressure
28.09 inHg
Visibility
10 mi
UV Index
5.4
Cloud Cover
21%
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 34°C. Dry conditions are expected through the next 24 hours. Atmospheric instability is elevated (CAPE up to 2105 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
34°
13%
7 PM
34°
17%
8 PM
31°
17%
9 PM
29°
9%
10 PM
27°
7%
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
19°
3%
9 AM
21°
3%
10 AM
23°
3%
11 AM
24°
3%
12 PM
26°
3%
1 PM
28°
3%
2 PM
29°
3%
3 PM
29°
3%
4 PM
29°
3%
5 PM
30°
3%
7-Day Forecast
Tonight
36° 17°
Mostly Clear.
Sat
32° 17°
Mostly Clear.
Sun
34° 18°
Partly Cloudy.
Mon
36° 18°
Mostly Clear with a 31% chance of rain.
Tue
28° 13°
Clear.
Wed
29° 12°
Mostly Clear.
Thu
29° 15°
Clear with a 28% chance of rain.
TimeTempConditionsPrecipWindHumidity
Now 34° Mostly Clear 13% 7 mph WNW 33%
7 PM 34° Partly Cloudy 17% 6 mph NNW 38%
8 PM 31° Mostly Clear 17% 7 mph N 49%
9 PM 29° Mostly Clear 9% 10 mph NNE 60%
10 PM 27° Mostly Clear 7% 12 mph NE 66%
11 PM 26° Mostly Clear 7% 11 mph NE 67%
12 AM 24° Mostly Clear 3% 10 mph NE 68%
1 AM 23° Mostly Clear 3% 9 mph NE 70%
2 AM 22° Partly Cloudy 3% 9 mph NE 71%
3 AM 22° Partly Cloudy 3% 9 mph NE 73%
4 AM 21° Partly Cloudy 3% 8 mph NE 76%
5 AM 17° Partly Cloudy 3% 8 mph NE 79%
6 AM 17° Mostly Cloudy 3% 8 mph NE 81%
7 AM 18° Partly Cloudy 3% 8 mph NE 76%
8 AM 19° Mostly Clear 3% 9 mph ENE 65%
9 AM 21° Mostly Clear 3% 10 mph ENE 54%
10 AM 23° Mostly Clear 3% 10 mph ENE 45%
11 AM 24° Mostly Clear 3% 9 mph ENE 39%
12 PM 26° Mostly Clear 3% 9 mph ENE 33%
1 PM 28° Mostly Clear 3% 8 mph NE 30%
2 PM 29° Mostly Clear 3% 9 mph NE 29%
3 PM 29° Mostly Clear 3% 9 mph NE 28%
4 PM 29° Mostly Clear 3% 9 mph NE 28%
5 PM 30° Mostly Clear 3% 9 mph NE 30%
15-Day Forecast
Today
7/17
Mostly Clear
13%
17°
36°
Sat
7/18
Mostly Clear
3%
17°
32°
Sun
7/19
Partly Cloudy
14%
18°
34°
Mon
7/20
Mostly Clear
31%
18°
36°
Tue
7/21
Clear
3%
13°
28°
Wed
7/22
Mostly Clear
8%
12°
29°
Thu
7/23
Clear
28%
15°
29°
Fri
7/24
Mostly Cloudy
28%
14°
29°
Sat
7/25
Partly Cloudy
44%
15°
31°
Sun
7/26
Rain
68%
16°
30°
Mon
7/27
Drizzle
44%
16°
32°
Tue
7/28
Drizzle
60%
19°
33°
Wed
7/29
Drizzle
60%
19°
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
Sat 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, 22:00'Z' · F0 · 130 (13 km CONUS/NA)
Hodograph · kt
10 20 30 40 SM
0–1 1–3 3–6 6–9 km
Instability
SBCAPE1778 J/kg
MLCAPE2409 J/kg
MUCAPE2872 J/kg
SBCIN0 J/kg
MLCIN0 J/kg
Lifted Index-5.0
Kinematics
0–6 km Shear11 kt
0–1 km Shear2 kt
Eff. Shear15 kt
0–1 km SRH-6
0–3 km SRH-11
Eff. SRH-11
Storm Motion250° @ 18 kt
0–1 km EHI-0.1
Composite Parameters
Sig. Tornado-0.0
STP (eff)0.0
Supercell0.0
K-Index40.3
Thermo & Levels
PWAT1.72 in
0–3 km LR8.6 °C/km
700–500 LR6.3 °C/km
Total Totals53.5
LCL754 hPa
LFC951 hPa
EL172 hPa
Freezing Lvl14,295 ft