Fennimore, WI 53809 Weather

Grant County10:34 AM CDT42.99°N, 90.66°W

Current conditions

Fog
41°
Fog
Feels like 39°
High 68°·Low 44°
WindNNE 3 mph
Humidity93%
Dew point39°
Pressure30.41 inHg
Visibility0.1 mi
Cloud cover5%
UV index2 Low
Sunrise7:23 AM
Sunset6:13 PM

Observed at Boscobel, Boscobel Airport · 59 min ago

Forecast

10-day

  • Today

    Patchy fog before 10am. Sunny. High near 68, with temperatures falling to around 66 in the afternoon. Southeast wind 2 to 8 mph.

  • Tonight

    Mostly clear, with a low around 44. South wind around 6 mph.

  • Wednesday

    Sunny. High near 69, with temperatures falling to around 67 in the afternoon. South wind 2 to 6 mph.

National Weather Service forecast updated 2 hrs ago.

Hourly

Hourly forecast
  1. Now Sunny 53°
  2. 11 AM Sunny 58°
  3. 12 PM Sunny 61°
  4. 1 PM Sunny 65°
  5. 2 PM Sunny 66°
  6. 3 PM Sunny 67°
  7. 4 PM Sunny 68°
  8. 5 PM Sunny 66°
  9. 6 PM Clear 61°
  10. 7 PM Clear 58°
  11. 8 PM Clear 53°
  12. 9 PM Clear 51°
  13. 10 PM Clear 50°
  14. 11 PM Clear 49°
  15. Wed12 AM Clear 48°
  16. 1 AM Clear 47°
  17. 2 AM Mostly Clear 47°
  18. 3 AM Mostly Clear 46°
  19. 4 AM Mostly Clear 45°
  20. 5 AM Mostly Clear 44°
  21. 6 AM Sunny 44°
  22. 7 AM Sunny 44°
  23. 8 AM Sunny 45°
  24. 9 AM Sunny 49°

10-day forecast

Details
  1. TodayOct 20 Patchy Fog then Sunny Patchy Fog then Sunny44°68°
  2. WedOct 21 Sunny Sunny47°69°
  3. ThuOct 22 Sunny Sunny48°71°
  4. FriOct 23 Mostly Sunny Mostly Sunny52°66°
  5. SatOct 24 Partly Sunny Partly Sunny52°67°
  6. SunOct 25 Partly Sunny Partly Sunny47°66°
  7. MonOct 26 Slight Chance Rain Showers Slight Chance Rain Showers15%41°60°
  8. TueOct 27 Partly cloudy Partly cloudy37°53°
  9. WedOct 28 Cloudy Cloudy41°55°
  10. ThuOct 29 Sunny Sunny36°49°

Days after the National Weather Service's seven are MET Norway's outlook, a computer model with no forecaster's review.

Radar

Full map
Open the National Weather Service radar (the map here needs JavaScript).

Weather news in Wisconsin

More weather news
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    wsaw.com·1 day ago
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Air quality

37
Good
Fine particles (PM2.5)

Air quality is satisfactory, and air pollution poses little or no risk.

Forecast

  • TueGood
  • WedGood
  • ThuGood

Driftless Area South, WI reporting area · 1 hr ago. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 7:23 AM
Sunset 6:13 PM
Daylight 10 h 50 min (−2 min 46 s tomorrow)
Waxing Gibbous · 69% lit
Moonrise 3:37 PM Moonset 1:12 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low57° / 38°
Record high82° (1953)
Record low15° (1930)
Wettest1.31 in (1934)
Yesterday64° / 41°
Month to date3.80 in (normal 1.87 in)

Lancaster 4 Wsw, records since 1893. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in ARX, issued 4 hrs ago

Key Messages

- Unseasonably warm into the weekend.

- Dry through Thursday night and then maybe some small rain chances from Friday into the weekend.

- Much uncertainty on temperatures and rain chances early next week.

Discussion

Issued at 1146 PM CDT Mon Oct 19 2026

Today through Thursday night

An anomalous 500 mb ridge will remain in control of the area's weather through Thursday night. This high will provide dry weather and unseasonably warm temperatures. High temperatures will warm from the mid- and upper 60s today and be in the lower and mid-70s on Thursday. Low temperatures will be in the 30s and 40s tonight and Wednesday night and in the 40s and 50s on Thursday night.

Friday and Friday night

A negatively tilted trough will move through Minnesota and western and northern Wisconsin. There is still plenty of uncertainty on whether there will be enough low-level moisture for any rain to move into our area.

With some more cover, high temperatures will be a bit cooler (mainly in the 60s). Low temperatures will be a bit warmer (upper 40s to mid-50s).

Aviation

Issued at 600 AM CDT Tue Oct 20 2026

Valley fog has developed overnight and is currently impacting ONA/PDC/OVS with issues seen on all side of LSE but seemingly not within 5 nautical miles. In any case, still prudent to carry a TEMPO at LSE given how close the issues are to impacting the terminal. Once the fog dissipates around 14-15z, VFR conditions will return. Fog may develop once again Wednesday morning primarily impacting the Wisconsin River valley and OVS while low level winds may be too strong for this to impact LSE once again so have kept it out of the TAF near the end of the period.

Arx Watches

WI...None. MN...None. IA...None.

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.