Glasgow, KY 42142 Weather

Barren County1:01 AM CDT37.00°N, 85.91°W
Special Weather Statement until 4:00 AM Wed

Current conditions

Clear
44°
Clear
Feels like 44°
High 73°·Low 42° tonight
WindCalm
Humidity95%
Dew point43°
Pressure30.27 inHg
Visibility10.0 mi
Cloud cover2%
UV index0 Low
Sunrise6:57 AM
Sunset6:00 PM

Observed at Glasgow, Glasgow Municipal Airport · 46 min ago

Forecast

10-day

  • Overnight

    Clear, with a low around 42. East wind around 2 mph.

  • Wednesday

    Sunny, with a high near 73. Northeast wind around 5 mph.

  • Wednesday Night

    Patchy fog after 5am. Clear, with a low around 43. Northeast wind around 2 mph.

National Weather Service forecast updated 50 min ago.

Hourly

Hourly forecast
  1. Now Clear 47°
  2. 2 AM Clear 46°
  3. 3 AM Clear 45°
  4. 4 AM Clear 43°
  5. 5 AM Clear 42°
  6. 6 AM Sunny 42°
  7. 7 AM Sunny 42°
  8. 8 AM Sunny 44°
  9. 9 AM Sunny 53°
  10. 10 AM Sunny 59°
  11. 11 AM Sunny 63°
  12. 12 PM Sunny 68°
  13. 1 PM Sunny 71°
  14. 2 PM Sunny 72°
  15. 3 PM Sunny 72°
  16. 4 PM Sunny 73°
  17. 5 PM Sunny 70°
  18. 6 PM Clear 66°
  19. 7 PM Clear 62°
  20. 8 PM Clear 56°
  21. 9 PM Clear 54°
  22. 10 PM Clear 52°
  23. 11 PM Clear 50°
  24. Thu12 AM Clear 48°

10-day forecast

Details
  1. TonightOct 20 Clear Clear42°
  2. TodayOct 21 Sunny Sunny43°73°
  3. ThuOct 22 Patchy Fog then Sunny Patchy Fog then Sunny42°72°
  4. FriOct 23 Sunny Sunny44°71°
  5. SatOct 24 Sunny Sunny44°73°
  6. SunOct 25 Sunny Sunny44°72°
  7. MonOct 26 Mostly Sunny Mostly Sunny47°72°
  8. TueOct 27 Partly Sunny Partly Sunny72°
  9. WedOct 28 Light showers Light showers0.04 in51°69°
  10. ThuOct 29 Mostly sunny Mostly sunny43°61°

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 Kentucky

More weather news

Air quality

Forecast

  • WedGood (46)

Mammoth Cave National Park, KY reporting area. Data from AirNow (EPA and its state, local and tribal partners); preliminary and subject to change.

Sun & moon

Sunrise 6:57 AM
Sunset 6:00 PM
Daylight 11 h 2 min (−2 min 13 s tomorrow)
Waxing Gibbous · 75% lit
Moonrise 3:33 PM Moonset 2:08 AM
Full moon Oct 26 New moon Nov 9

Almanac

Monthly
Normal high / low72° / 47°
Record high89° (1953)
Record low21° (1952)
Wettest1.50 in (1965)
Yesterday76° / 42°
Month to date2.07 in (normal 2.47 in)

Mammoth Cave, records since 1934. Normals 1991–2020. Data from NOAA's Regional Climate Centers (ACIS).

Nearby

Forecasters' discussion

From the National Weather Service office in LMK, issued 27 min ago

Key Messages

* Highs in the low 70s with lows in the 40s and isolated 30s will continue through the weekend.

* Patchy dense valley fog is expected to form again tonight and into the morning hours, slowly becoming patchier and isolated heading towards and west of I-65.

* Stubborn ridging promotes a prolonged dry period with pleasant afternoons through at least early next week.

Discussion

Issued at 225 PM EDT Tue Oct 20 2026

====== Dense River Valley Fog & Warm Afternoons =====

There is a mid to upper level low swinging through southern KY and can see the swirl on water vapor imagery. This is just bringing passing high level clouds in our SE. Light northeasterly flow is keeping temperatures mild in the upper 60s to low 70s across the area. Arguably, the most exciting thing to monitor would be dew points today and for the following days. This will determine how dry and comfortable each afternoon will feel, along with the chances of fog formation each morning as well. Relative humidity values are generally bottoming out in the low and mid 30s but will recover to near 100% overnight and into tomorrow morning.

Low temperatures tonight will reach the low to mid 40s and mid to upper 30s in our deepest, decoupled river valleys. Just as this morning, dense fog will likely form in river valleys in the east, becoming more patchy dense fog in valleys west of I-65. As we saw this morning, fog will dissipate by late morning, with the latest being near 10-11 AM EDT in eastern areas. Then by Wednesday afternoon, the locked in ridge pattern overhead will lock in sunny skies and generally light N-NE flow. As long as the deep low off the east coast and troughing over the western US continues, our pattern will remain the same.

We'll have to monitor the dew points tomorrow as well as this will alter fog chances for Thursday morning. Fog may become more prevalent by then, but this will be fine tuned between now and tomorrow night.

===== Stubborn Ridging and Next Potential Rain Chance =====

Aviation

Issued at 134 AM EDT Wed Oct 21 2026

Prevailing VFR conditions are likely through much of this period with SKC and a light NE wind. Fog is likely to develop in river valleys early this morning, but should not impact the terminals. However, based on T/Td trends, HNB may see some brief vis reductions early Wednesday morning.

Lmk Watches

KY...None. IN...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 4Conservative index and reflects what the press published. Terms of use.