Sd RWIS CorsicaSD601
Beside a road/6.8 mi away/1,565 ft/29 ft below here
temp, pavement temp, wind, visibility, precip
Weather/South Dakota/Harrison
Alert. A Frost Advisory is in force for Harrison until 9 AM today. Read the alert in full, and see what it means in the Field Book.
Now. Harrison is 36° and clear at 1 AM. With the wind it feels like 29°. The dew point is 30°, so the air feels dry and comfortable. Gentle breeze from the south at 10 mph.
Today and tonight. It warms to about 64° by 4 PM. Tonight falls to about 44° by 7 AM, under a mostly clear sky. No rain is expected for the rest of the day.
The week. The warmest day ahead is Thursday, near 74°, and the coolest Monday, near 63°. Rain is possible Friday (36%).
The sky tonight. The sun sets at 6:48 PM. The Moon is a waxing crescent, 43% lit, and sets at 11:37 PM. The next full Moon is Sunday, Oct 25. After dark, look for Saturn, bright in the east-southeast. A planet shines with a steady light where the stars around it twinkle. The Orionids meteor shower is active, peaking around Oct 21: at its peak, up to about 20 meteors an hour can be seen from a dark site. The sky is forecast to stay clear: a good night to look up. The day is 10 hours 59 minutes long, 3 minutes shorter than yesterday.
As of 1:00 AM in Harrison, South Dakota.
Air quality
Index 10, good, led by ozone. Read at 12 AM from its reporting area, Santee Sioux Reservation (NE), 54 miles off.
Yesterday measured 24, good.
No smoke near the ground through Sun 7 PM.
Precipitation
None in the last 24 hours; 0.28 in over the last 3 days, to Sat 12 AM. Measured by radar and rain gauges, as water.
Visibility
Visibility stays 10 miles or more through Sun 7 PM.
F
Now, today, and the week
On the radar over Harrison, South DakotaReflectivityStorm topsRain rateRain, last 24 hoursForecast temperatureForecast rain totalEvery picture
The 6 instruments nearest Harrison, how far away each one is, how high it stands, and what kind of measurement it makes. The nearest is 1.8 miles away.
measured now4 instruments
Sd RWIS CorsicaSD601
Beside a road/6.8 mi away/1,565 ft/29 ft below here
temp, pavement temp, wind, visibility, precip
Lake Andes RAWSRLAS2
A remote fire weather station/16.7 mi away/1,709 ft/115 ft above here
temp, wind, gust, humidity, pressure
WagnerAGZ
At an airfield/27.9 mi away/1,467 ft/127 ft below here
temp, wind, gust, visibility, precip, pressure
Citizen station GW4826GW4826
In a volunteer observer's own ground/30.2 mi away/1,336 ft/258 ft below here
temp, humidity, wind, precip, pressure
measured daily2 instruments
Corsica 4.3 WSD-DG-12
In a volunteer observer's own ground/1.8 mi away/1,611 ft/17 ft above here
precip, snowfall, snow depth
PlattePLTS2
At a cooperative observer's station/16.0 mi away/1,608 ft/14 ft above here
snowfall, snow depth, precip, high, low
Station report
The nearest airport reporting now, 27.9 mi from Harrison, South Dakota. From its report of Oct 17, 2026, 1:15 AM local time: 3 of its 6 sheets.
No cloud below 12,000 ft; visibility 10 mi or more.
37.4 F with a dew point of 37.4 F, 100 per cent relative humidity. The air is saturated at the ground.
From the south (180 degrees) at 9 mph: force 3, a gentle breeze on the Beaufort scale.
The full report of Wagner, in 6 sheets, each beside the Field Book plates that explain it
0in
Snow on the ground
Measured at Platte (PLTS2), 16.0 miles from here, read 15 Oct, 18:00. measured daily
24 places, each with its own forecast and its own instruments.
The nearest places, each with its own forecast and the instruments nearest it.