Harrington, SD Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Harrington Weather Forecast
| REST OF TODAY | TONIGHT | WEDNESDAY | WEDNESDAY NIGHT | THURSDAY | THURSDAY NIGHT | FRIDAY | FRIDAY NIGHT | SATURDAY | SATURDAY NIGHT | SUNDAY | SUNDAY NIGHT |
| Chance of T-Storm | Chance of Showers | Chance of Showers | Partly Cloudy | Mostly Cloudy | Chance of Showers | Chance of T-Storm | Chance of T-Storm | Mostly Sunny | Mostly Clear | Mostly Sunny | Chance of Showers |
| Hi: 61°FHi: 16°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 75°FHi: 24°C | Lo: 51°FLo: 11°C | Hi: 71°FHi: 22°C | Lo: 55°FLo: 13°C | Hi: 80°FHi: 27°C | Lo: 55°FLo: 13°C | Hi: 79°FHi: 26°C | Lo: 55°FLo: 13°C |
| POP: 50% | POP: 20% | POP: 20% | POP: 40% | POP: 50% | POP: 20% | POP: 30% |
POP = Probability of Precipitation.
Weather Outlook Updated: 832 AM MDT Tue Sep 22 2026 

Harrington Radar Loop
Use the map search tool if you want to place a location marker on the radar map...
Harrington Weather Map
Harrington Quick Facts
Harrington Forecast Discussion
Meteorlogic Glosserator
Instant definitions for any meteorological term.
Instant definitions for any meteorological term.
Issued: 520 AM MDT Tue Sep 22 2026
Key Messages
- Showers have tapered off with lingering low clouds/fog developing.
- Overall drier weather expected for the rest of the week, but southwest flow aloft will bring some chances for showers and thunderstorms.
- Breezy/windy spots Tuesday/Wednesday
Discussion
...(This Evening Through Monday) Issued at 109 PM MDT Mon Sep 21 2026
19z surface analysis had sprawling high pressure over the Great Lakes into the northern Plains bringing low-level easterly component to boundary layer flow. Water vapour...
Weather World