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Napoleon, ND Weather
Current conditions
Observed at Bismarck, Bismarck Municipal Airport · 23 min ago
Forecast
10-day-
Wednesday
Sunny, with a high near 63. Northeast wind around 12 mph, with gusts as high as 18 mph.
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Wednesday Night
Mostly clear, with a low around 43. Southeast wind around 10 mph, with gusts as high as 20 mph.
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Thursday
Sunny, with a high near 71. Southeast wind 12 to 21 mph, with gusts as high as 32 mph.
National Weather Service forecast updated 1 day ago.
Hourly
Hourly forecast- Now58°
- 2 PM60°
- 3 PM62°
- 4 PM62°
- 5 PM61°
- 6 PM59°
- 7 PM53°
- 8 PM50°
- 9 PM48°
- 10 PM47°
- 11 PM46°
- Thu12 AM46°
- 1 AM46°
- 2 AM46°
- 3 AM46°
- 4 AM46°
- 5 AM46°
- 6 AM45°
- 7 AM46°
- 8 AM48°
- 9 AM51°
- 10 AM54°
- 11 AM58°
- 12 PM63°
10-day forecast
Details- TonightOct 19Clear42°
- TueOct 20Sunny41°70°
- TodayOct 21Sunny43°63°
- ThuOct 22Sunny55°71°
- FriOct 23Chance Showers And Thunderstorms38%47°69°
- SatOct 24Mostly Sunny11%35°53°
- SunOct 25Sunny30°51°
- MonOct 26Mostly Sunny11%47°
- TueOct 27Partly cloudy31°46°
- WedOct 28Mostly sunny36°55°
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 in North Dakota
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Sun & moon
Forecasters' discussion
From the National Weather Service office in BIS, issued 57 min ago
Key Messages
- Above normal temperatures through the work week, with near record highs possible Thursday and Friday.
- Much cooler temperatures this weekend and into early next week.
- Dry conditions through Thursday, then low to medium chances for showers Friday into Saturday.
- Breezy to windy Friday and Saturday.
Update
Issued at 1216 PM CDT Wed Oct 21 2026
A few high clouds are working into southwestern North Dakota, otherwise quiet conditions continue with no major updates needed at this time.
UPDATE Issued at 842 AM CDT Wed Oct 21 2026
The forecast remains on track.
UPDATE Issued at 547 AM CDT Wed Oct 21 2026
Clear skies across western and central ND early this Wednesday morning. No updates needed at this time.
Discussion
Issued at 326 AM CDT Wed Oct 21 2026
Currently, mostly clear skies across western and central North Dakota. A weak, dry cold front has pushed through all but the far southeast portion of the state. Temperatures behind the front were in the lower 30s to mid 40s. A few areas of patchy fog were noted where temperature/dew point spread were close.
For today, high pressure slides east across the state. Generally light winds from the north will shift east to southeast through the day. Western ND will see some stronger southeast winds (around 15-20 mph) mid to late afternoon. Highs today will be just a bit cooler than Tuesday for most areas, but still well above normal. Lows tonight will range from the mid 30s to mid 40s.
Thursday and Friday will see the warmest temperatures of the week. Highs each day will range from the mid 70s to lower 80s, with warmest temperatures each day in the southwest. We utilized a blend of NBM and NBM90 for today through Friday. Today was a 50/50 blend with Thursday and Friday each leaning towards the warmer NBM90 temperatures. Near record, to record highs will be possible, especially southwest and south central.
An upper level trough lifts into the Region Friday into Saturday. This will bring an increasing southerly surface flow to western and central ND Friday, with a strong west to northwest surface flow on Saturday.
Friday afternoon and evening will see mainly low chances for showers and possibly an isolated thunderstorm. Moderate to strong shear lifts through the forecast area with some elevated CAPE, as high as around 600 J/kg over western ND around 00Z Saturday. With the warm temperatures expected. Low level CIN will remain and will be hard to overcome. The highest precipitation chances will be Friday night as wrap around moisture lifts through the northwest portion of the state behind the surface low that lifts northward into southern Canada. Much cooler air will also spread into the State on Saturday, ushered in by the strong west to northwest winds. After highs in the 70s and lower 80s Friday. Highs Saturday are forecast to range from the mid 40s northwest to the upper 50s over the southern James River Valley.
Aviation
Issued at 1216 PM CDT Wed Oct 21 2026
VFR ceilings and visibility are expected through the 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.