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Martin, SD Weather
Current conditions
Observed at Gordon Municipal · 42 min ago
Forecast
10-day-
Wednesday
Sunny. High near 68, with temperatures falling to around 66 in the afternoon. North wind 6 to 9 mph, with gusts as high as 16 mph.
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Wednesday Night
Mostly clear. Low around 48, with temperatures rising to around 51 overnight. Southeast wind 7 to 13 mph, with gusts as high as 22 mph.
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Thursday
Mostly sunny. High near 76, with temperatures falling to around 72 in the afternoon. South wind 13 to 23 mph, with gusts as high as 33 mph.
National Weather Service forecast updated 1 day ago.
Hourly
Hourly forecast- Now45°
- 8 AM47°
- 9 AM50°
- 10 AM55°
- 11 AM59°
- 12 PM64°
- 1 PM66°
- 2 PM67°
- 3 PM68°
- 4 PM67°
- 5 PM66°
- 6 PM60°
- 7 PM55°
- 8 PM52°
- 9 PM51°
- 10 PM50°
- 11 PM49°
- Thu12 AM49°
- 1 AM50°
- 2 AM50°
- 3 AM51°
- 4 AM51°
- 5 AM51°
- 6 AM52°
10-day forecast
Details- TonightOct 19Clear42°
- TueOct 20Sunny45°72°
- TodayOct 21Sunny48°68°
- ThuOct 22Mostly Sunny55°76°
- FriOct 23Mostly Sunny31%44°77°
- SatOct 24Mostly Sunny15%36°55°
- SunOct 25Sunny13%35°59°
- MonOct 26Slight Chance Light Rain then Mostly Sunny15%58°
- TueOct 27Cloudy33°49°
- WedOct 28Sunny35°49°
Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.
Radar
Full mapWeather news near Martin
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Sun & moon
Forecasters' discussion
From the National Weather Service office in UNR, issued 2 hrs ago
Key Messages
- Warm and dry weather through much of this week.
Update
Issued at 1058 PM MDT Tue Oct 20 2026
No major changes to the forecast this evening. Surface analysis shows a weak cold front crossing NW SD at this time. Across SW SD, temps are in the mid to upper 50s while over NW SD into portions of NE WY temps are dropping into the upper 40s. NW winds will continue overnight into Wed morning, then return flow sets up as the surface high pushes east of the CWA Wed afternoon. Max temps on Wed will be in the 60s to low 70s...but then a decent overnight LLJ/warm air advection will push highs on Thursday well above average (upper 70s to possibly mid 80s over the western SD plains).
Discussion
(This Evening Through Tuesday) Issued at 1254 PM MDT Tue Oct 20 2026
Current upper level analysis shows broad ridging over the central and western US with deepening trof off the west coast. The CWA sits under upper level southwest flow and clear skies. Sfc stations report light southerly winds across much of western SD with temperatures in the 60s to low 70s.
Weak front will cross the CWA overnight with the only impacts being a slight drop in tomorrow's highs and a brief period of breezy northwest winds overnight. Upper ridge builds over the region Wednesday into Thursday with southerly return flow supporting warming temps over the area.
Southerly winds pick up early Friday morning as upper level trof approaches with attendant sfc low and trailing cold front crossing the Northern Plains. WAA ahead of the front Friday afternoon will support highs in the upper 70s to low 80s over the western SD plains. As the front crosses the area later Friday evening, winds will shift to the northwest but remain breezy through the night, especially over northwestern SD. Much cooler conditions expected over the weekend with low chances for light precip.
Aviation
(For the 12Z TAFS Through 12Z Thursday Morning) Issued At 511 AM MDT Wed Oct 21 2026
VFR conditions are expected through the forecast period.
Forecasts, observations and alerts in the United States come from the National Weather Service (NOAA); radar from NOAA's Multi-Radar Multi-Sensor system; satellite imagery from NASA's Global Imagery Browse Services (GIBS) and NOAA's GOES satellites; the map from the U.S. Geological Survey's National Map; air quality from AirNow (EPA and its partners); hurricane information from the National Hurricane Center; climate normals and records from NOAA's Regional Climate Centers (ACIS). Forecasts outside the United States and the UV index: MET Norway (CC BY 4.0); observations outside the U.S.: airport reports via NOAA's Aviation Weather Center. Place names: GeoNames (CC BY 4.0). Data are copied on a schedule and may lag the sources; for warnings that affect your safety, follow your local National Weather Service office and emergency officials. Weather news is drawn from the 4Search index and reflects what the press published. Terms of use.