Hazardous Weather Conditions
Current conditions at
Monticello, Sullivan County International Airport (KMSV)
Lat: 41.7°NLon: 74.8°WElev: 1404ft.
Partly Cloudy
17°F
-8°C
| Humidity | 59% |
| Wind Speed | NW 13 G 18 mph |
| Barometer | 30.10 in (1021.8 mb) |
| Dewpoint | 5°F (-15°C) |
| Visibility | 10.00 mi |
| Wind Chill | 3°F (-16°C) |
| Last update | 23 Jan 4:56 pm EST |
Extended Forecast for
Tennanah Lake NY
Cold Weather Advisory January 23, 07:00pm until January 24, 10:00am
Winter Storm Warning January 25, 01:00am until January 26, 07:00pm
Tonight

Low: -4 °F
Mostly Cloudy
Saturday

High: 6 °F
Cold
Saturday Night
Low: 2 °F
Mostly Cloudy
then Chance
SnowSunday

High: 13 °F
Heavy Snow
Sunday Night

Low: 9 °F
Heavy Snow
Monday

High: 18 °F
Snow Likely
Monday Night

Low: 0 °F
Mostly Cloudy
Tuesday

High: 12 °F
Partly Sunny
Tuesday Night

Low: -2 °F
Mostly Cloudy
Detailed Forecast
Tonight
Mostly cloudy, with a low around -4. Wind chill values as low as -22. Northwest wind 13 to 15 mph.
Saturday
Increasing clouds and cold, with a high near 6. Wind chill values as low as -22. Northwest wind 8 to 11 mph.
Saturday Night
A chance of snow after 1am. Mostly cloudy, with a low around 2. Wind chill values as low as -11. North wind 5 to 7 mph becoming northeast after midnight. Chance of precipitation is 30%. New snow accumulation of less than a half inch possible.
Sunday
Snow. The snow could be heavy at times. High near 13. Wind chill values as low as -7. East wind 6 to 8 mph. Chance of precipitation is 100%. New snow accumulation of around 8 inches.
Sunday Night
Snow. The snow could be heavy at times. Low around 9. East wind 8 to 10 mph. Chance of precipitation is 100%.
Monday
Snow likely, mainly before 1pm. Mostly cloudy, with a high near 18. Chance of precipitation is 70%.
Monday Night
Mostly cloudy, with a low around 0.
Tuesday
Partly sunny, with a high near 12.
Tuesday Night
Mostly cloudy, with a low around -2.
Wednesday
Mostly sunny, with a high near 14.
Wednesday Night
Mostly cloudy, with a low around -1.
Thursday
Mostly cloudy, with a high near 11.
Thursday Night
Mostly cloudy, with a low around -1.
Friday
Partly sunny, with a high near 12.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
ABOUT THIS FORECAST
Point Forecast:
Tennanah Lake NY
41.88°N 74.95°W (Elev. 2280 ft)
41.88°N 74.95°W (Elev. 2280 ft)
3:22 pm EST Jan 23, 2026
5pm EST Jan 23, 2026-6pm EST Jan 30, 2026



