Weather World
City of Sidney, MTSidney, MT 7-Day Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Sidney Weather Forecast
Sidney, MT Weather Forecast Date: 536 PM MDT Wed Sep 23 2026
Weather forecast for Sidney, MT
Tonight Lo: 49°F Lo: 9°C |
Tonight... Partly cloudy this evening, then becoming mostly cloudy. Patchy fog this evening, then areas of fog after midnight. Lows in the upper 40s. Northwest wind around 5 mph, becoming southwest after midnight. |
Thu Hi: 81°FHi: 27°C Lo: 51°F Lo: 11°C |
Thursday... Areas of fog in the morning. Sunny. Highs in the lower 80s. South wind around 5 mph. |
| Fri Hi: 79°FHi: 26°C Lo: 45°F Lo: 7°C |
Friday... Mostly sunny. Highs in the upper 70s. Southeast wind around 5 mph, increasing to 15 to 20 mph in the afternoon. |
| Sat Hi: 71°FHi: 22°C Lo: 45°F Lo: 7°C |
Saturday... Mostly clear. Highs in the lower 70s. Lows in the mid 40s. |
| Sun Hi: 69°FHi: 21°C Lo: 49°F Lo: 9°C |
Sunday... Mostly sunny. Highs in the upper 60s. |
Mon Hi: 65°FHi: 18°C Lo: 41°F Lo: 5°C |
Monday... A chance of showers. Highs in the mid 60s. |
| Tue Hi: 61°FHi: 16°C Lo: 41°F Lo: 5°C |
Tuesday... Mostly sunny. Highs in the lower 60s. |
Sidney Radar Loop
Use the map search tool if you want to place a location marker on the radar map...