Water Temperature of the Mongaup River in Glen Spey, NY

Current Water Temperature

35.4°F

Measurement Time: Wednesday, February 18, 2026, 8:15 AM EST

Temperature Locations

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Local Points of Interest

Lumberland, NY

Mongaup River

Station Name: MONGAUP RIVER NEAR MONGAUP NY
Data Source: Water Data - usgc.gov

Elevation Above Sea Level: 673 feet

Nearest Address:
20–98 Powerhouse Rd
Glen Spey, NY 12737
Sullivan County

GPS Coordinates: 41.4612222, -74.75877778

Nearby Water Temperatures

Mongaup River, Forestburgh, NY (7.4 mi)
Neversink River, Godeffroy, NY (8.2 mi)
Basher Kill, Westbrookville, NY (11 mi)
Delaware River, Narrowsburg, NY (12.2 mi)
Neversink River, Bridgeville, NY (14.3 mi)
Tenmile River, Tusten, NY (15 mi)
Sheldrake Stream, Thompsonville, NY (15.9 mi)
Gumaer Brook, Wurtsboro, NY (17.7 mi)
Callicoon Creek, Callicoon, NY (25.5 mi)
Neversink River, Neversink, NY (25.6 mi)
Neversink Reservoir, Neversink, NY (26.1 mi)
Chestnut Creek, Grahamsville, NY (29.2 mi)
Cannonsville Reservoir Diversion Channel, Grahamsville, NY (29.8 mi)
Willowemoc Creek, Livingston Manor, NY (30.7 mi)
Neversink River, Claryville, NY (30.9 mi)

Weather for Glen Spey, New York

Current Weather

35.1°F
Light rain
Light rain
33.9°F
45.8°F
100%
ESE 2.2 mph
2.3 mph
44.3°F
43.8°F
0.04 in
100%
1 mi
1008 mbar
0.3

Five Day Weather Forecast

Moderate rain
Wed
H: 48°F
L: 32°F
Overcast
Thu
H: 36°F
L: 25°F
Mist
Fri
H: 34°F
L: 30°F
Overcast
Sat
H: 40°F
L: 27°F
Heavy snow
Sun
H: 34°F
L: 24°F

Air Quality

AQI: 1 - Good
PM2.5: 48.15 μg/m3
PM10: 48.35 μg/m3
Carbon Monoxide: 370.85 μg/m3
Nitrogen Dioxide: 55.95 μg/m3
Sulphur Dioxide: 10.55 μg/m3
Ozone: 18 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 12:12 AM
Sunset: 5:36 PM
Daylight: 10 hrs 46 mins
Moonrise: 7:24 AM
Moon Transit: 1:10 PM
Moonset: 7:08 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

2:23 AM - 4:53 AM
12:40 AM - 3:10 PM

Minor Periods

6:38 PM - 8:08 PM
6:54 AM - 8:24 AM

Action Rating: 4 out of 5

Dense Fog Advisory issued February 18 at 7:19AM EST until February 18 at 10:00AM EST by NWS Mount Holly NJ

Effective: Wed February 18, 2026, 7:19 AM
Expires: Wed February 18, 2026, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. Patchy ice. * WHERE...Portions of northern Delaware, northeast Maryland, central, northern, northwest, and southern New Jersey, and east central, northeast, and southeast Pennsylvania. * WHEN...Until 10 AM EST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. Patchy freezing fog could result in icy roads.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.


Air Quality Alert issued February 18 at 9:00AM EST by NWS Mount Holly NJ

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Wed February 18, 2026, 9:00 AM
Expires: Thu February 19, 2026, 9:00 AM

The New Jersey Department of Environmental Protection has issued a Code Orange Air Quality Action Day for Fine Particulates, until midnight EST tonight. An Air Quality Advisory means that air quality within the region may approach or exceed unhealthy standards. For more information on current and forecast concentrations of ground-level ozone and fine particulates, visit www.airnow.gov or www.state.nj.us/dep/airmon/ or call the New Jersey Bureau of Air Monitoring at 609-292-0138


Special Weather Statement issued February 17 at 11:11PM EST by NWS Upton NY

Effective: Tue February 17, 2026, 11:11 PM
Expires: Wed February 18, 2026, 10:00 AM

Surface temperatures were at or below freezing across much of the area, and will remain below freezing through the overnight and into early Wednesday morning. With widespread dense fog expected moisture will freeze on the cold surfaces resulting in black ice. Motorists are urged to slow down and travel with caution into Wednesday morning.


Dense Fog Advisory issued February 18 at 1:31AM EST until February 18 at 10:00AM EST by NWS Upton NY

Effective: Wed February 18, 2026, 1:31 AM
Expires: Wed February 18, 2026, 10:00 AM

* WHAT...Visibility one quarter mile or less in dense fog. * WHERE...Portions of southern Connecticut, northeastern New Jersey, and southeastern New York. * WHEN...Until 10 AM EST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

If driving, slow down, use your headlights, and leave plenty of distance ahead of you.


Air Quality Alert issued February 18 at 8:58AM EST by NWS Upton NY

Non-Weather Emergency Message. Not sent to IPAWS.

Effective: Wed February 18, 2026, 8:58 AM
Expires: Wed February 18, 2026, 11:00 PM

The New Jersey Department of Environmental Protection has issued an Air Quality Action Day for the following counties: Bergen, Passaic, Hudson, Essex, Union until midnight EST tonight. An Air Quality Action Day means that Fine Particulates within the region may approach or exceed unhealthy standards. For additional information, please visit the New Jersey Department of Environmental Protection Web site at https://dep.nj.gov/airmon


Wednesday, February 18, 2026

Weather Forecast

Moderate rain
48°F
31.8°F
38.6°F
84%
0.22 in
89%
3%
3.8 mph
0.1


Air Quality

AQI: 2 - Moderate
PM2.5: 40.25 μg/m3
PM10: 40.65 μg/m3
Carbon Monoxide: 334.89 μg/m3
Nitrogen Dioxide: 31.69 μg/m3
Sulphur Dioxide: 9.9 μg/m3
Ozone: 38.24 μg/m3

Astronomical

Sunrise: 6:50 AM
Sun Transit: 12:12 AM
Sunset: 5:36 PM
Daylight: 10 hrs 46 mins
Moonrise: 7:24 AM
Moon Transit: 1:10 PM
Moonset: 7:08 PM
Moon Phase: New
Moon Illumination: 1.3%

Best Times for Fishing or Hunting

Major Periods

2:23 AM - 4:53 AM
12:40 AM - 3:10 PM

Minor Periods

6:38 PM - 8:08 PM
6:54 AM - 8:24 AM

Action Rating: 4 out of 5

Thursday, February 19, 2026

Weather Forecast

Overcast
36.3°F
25°F
32.6°F
86%
0 in
0%
0%
4.9 mph
0.2


Air Quality

AQI: 2 - Moderate
PM2.5: 24.14 μg/m3
PM10: 24.39 μg/m3
Carbon Monoxide: 257.29 μg/m3
Nitrogen Dioxide: 35.46 μg/m3
Sulphur Dioxide: 5.88 μg/m3
Ozone: 38.48 μg/m3

Astronomical

Sunrise: 6:49 AM
Sun Transit: 12:12 AM
Sunset: 5:38 PM
Daylight: 10 hrs 49 mins
Moonrise: 7:45 AM
Moon Transit: 1:55 PM
Moonset: 8:19 PM
Moon Phase: Waxing Crescent
Moon Illumination: 5.2%

Best Times for Fishing or Hunting

Major Periods

3:08 AM - 5:38 AM
1:25 PM - 3:55 PM

Minor Periods

7:49 PM - 9:19 PM
7:15 AM - 8:45 AM

Action Rating: 3 out of 5

Friday, February 20, 2026

Weather Forecast

Mist
34.2°F
30°F
32.5°F
96%
0.18 in
76%
13%
7.6 mph
0.1


Air Quality

AQI: 1 - Good
PM2.5: 12.05 μg/m3
PM10: 13.35 μg/m3
Carbon Monoxide: 278.17 μg/m3
Nitrogen Dioxide: 31.67 μg/m3
Sulphur Dioxide: 5.39 μg/m3
Ozone: 45.44 μg/m3

Astronomical

Sunrise: 6:47 AM
Sun Transit: 12:12 AM
Sunset: 5:39 PM
Daylight: 10 hrs 52 mins
Moonrise: 8:07 AM
Moon Transit: 2:42 PM
Moonset: 9:30 PM
Moon Phase: Waxing Crescent
Moon Illumination: 11.3%

Best Times for Fishing or Hunting

Major Periods

3:54 AM - 6:24 AM
2:12 PM - 4:42 PM

Minor Periods

9:00 PM - 10:30 PM
7:37 AM - 9:07 AM

Action Rating: 3 out of 5

Saturday, February 21, 2026

Weather Forecast

Overcast
40.4°F
26.6°F
35.5°F
91%
0 in
0%
3%
7.2 mph
0.5


Air Quality

AQI: 1 - Good
PM2.5: 4.81 μg/m3
PM10: 4.97 μg/m3
Carbon Monoxide: 228.97 μg/m3
Nitrogen Dioxide: 10.85 μg/m3
Sulphur Dioxide: 2.22 μg/m3
Ozone: 61.04 μg/m3

Astronomical

Sunrise: 6:46 AM
Sun Transit: 12:12 AM
Sunset: 5:40 PM
Daylight: 10 hrs 54 mins
Moonrise: 8:31 AM
Moon Transit: 3:31 PM
Moonset: 10:45 PM
Moon Phase: Waxing Crescent
Moon Illumination: 19.4%

Best Times for Fishing or Hunting

Major Periods

4:42 AM - 7:12 AM
3:01 PM - 5:31 PM

Minor Periods

10:15 PM - 11:45 PM
8:01 AM - 9:31 AM

Action Rating: 4 out of 5

Sunday, February 22, 2026

Weather Forecast

Heavy snow
33.5°F
23.8°F
30.4°F
93%
0.18 in
61%
66%
11.2 mph
0


Air Quality

AQI: 1 - Good
PM2.5: 11.08 μg/m3
PM10: 12.04 μg/m3
Carbon Monoxide: 314.04 μg/m3
Nitrogen Dioxide: 39.93 μg/m3
Sulphur Dioxide: 4.86 μg/m3
Ozone: 28.62 μg/m3

Astronomical

Sunrise: 6:44 AM
Sun Transit: 12:12 AM
Sunset: 5:41 PM
Daylight: 10 hrs 57 mins
Moonrise: 8:59 AM
Moon Transit: 4:23 PM
Moonset: 12:02 PM
Moon Phase: Waxing Crescent
Moon Illumination: 29.1%

Best Times for Fishing or Hunting

Major Periods

5:33 AM - 8:03 AM
3:53 PM - 6:23 PM

Minor Periods

12:00 AM - 12:00 AM
8:29 AM - 9:59 AM

Action Rating: 2 out of 5

The times presented here are based upon the solunar theory, which is the idea that the movements of fish and other animals are affected by the location of the sun and moon. The major periods are believed to be the times of the greatest animal activity and occur when the moon is directly overhead or underfoot (lunar transits). The minor periods also see increased activity and occur when the moon is rising or setting. The strongest activity occurs during full or new moons, and the weakest during quarter or three quarter moons. This is indicated by the Action Rating.

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