Sylvan Lake

Sylvan Lake

East Custer, Custer County, SD
0mi²
ft
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Lake Information

Nestled within the stunning Custer State Park in South Dakota, Sylvan Lake is a true gem of natural beauty. Known for its breathtaking scenery and crystal clear waters, it is no wonder that it is a popular spot for weddings and photography sessions. As the sun rises over the eastern horizon, the lake reflects a shimmering orange hue that paints a picture-perfect setting for any special occasion. Apart from its stunning visuals, Sylvan Lake offers plenty of opportunities for outdoor recreation. Whether you are a seasoned rock climber or a novice hiker, the park has something to offer everyone. Adventurers can traverse the rocky cliffs surrounding the lake or hike the scenic trail around the lake. Anglers can cast their lines and try their luck catching rainbow trout or a variety of other fish species. The lake is also an ideal spot for swimming and small boat rentals, allowing visitors to explore the tranquil waters. For those who prefer a more laid-back experience, Sylvan Lake is a peaceful place to take in the surrounding scenery. The towering rock formations provide a natural amphitheater, where the sounds of nature create a serene atmosphere. As you sit by the water's edge and watch the sun dip below the western horizon, you will feel a sense of tranquility that is unmatched by any other location. Overall, Sylvan Lake is a true hidden gem that offers visitors a unique and unforgettable experience. Whether you are seeking adventure or relaxation, the lake provides a stunning backdrop for any outdoor enthusiast. So come and discover the beauty and charm of this natural wonder and make memories that will last a lifetime.

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Current Conditions

43°F°
Feels like 42°F°
PartlyCloudy
Today's High
47°F°
Today's Low
34°F°

Water Temperature

56°F
Updated: (Apr 30)
Sign in to contribute temps.

Current water temperature for Sylvan Lake is 56°F.

Current Snapshot

Wind6 mph N (Gust 18 mph)
Pressure
29.90 inHg
Visibility12 mi
Humidity77%
Cloud Cover53%

Forecast: Thursday, May 1

Day 1 of 9

Hourly Insights

7 AM
37°F°
10 AM
46°F°
1 PM
45°F°
20%
4 PM
44°F°
15%

Temperature

High
47°F°
Low
34°F°

Precipitation

Chance29%
Amount0.0"
Typerain

Wind

8mph
Avg Speed
Gusts up to
30mph
CalmModerateStrong
Max Speed12 mph

Sun, Moon & UV

Sunrise11:45 AM
Sunset1:57 AM
Moon PhasewaxingCrescent
Max UV Index4 (Moderate)

Solunar Fishing Forecast

Action Rating
2/5

Todays action is rated a 2 (scale is 0 thru 5, 5 is the best)

Major Times (Best)

10:25 PM - 12:55 AM

8:00 AM - 10:30 AM

Minor Times (Good)

2:00 PM - 3:30 PM

6:00 AM - 6:00 AM

Outlook for Thursday at Sylvan Lake

Expect temperatures ranging from 34°F to 47°F. There's a 29% chance of rain, potentially bringing around 0.0" snow. Winds will be averaging 8 mph, with potential gusts reaching up to 30 mph. The maximum UV index will be 4 (Moderate), so plan sun protection accordingly. For anglers, today's fishing action is rated 2/5 (Todays action is rated a 2 (scale is 0 thru 5, 5 is the best)). Look for the best bite times during the major periods around 10:25 PM and 8:00 AM, or try the minor windows near 2:00 PM and 6:00 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Sylvan Lake.

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May 1st 2025

Lake Information

Elevation
N/A
Area
0 mi²
Coordinates
43.844, -103.562

Weather Forecast

Thursday

47°F
34°F

Friday

55°F
32°F

Saturday

65°F
39°F

Sunday

65°F
45°F

Monday

61°F
44°F

Tuesday

54°F
40°F

Wednesday

56°F
40°F

Thursday

65°F
44°F

Friday

64°F
47°F
Thursday - 5/1/2025
47°F
34°F
12am
37°F
56°F
30.02 hPa
5 mph
NNW
G: 12 mph
2am
36°F
56°F
30.04 hPa
5 mph
NNW
G: 14 mph
4am
35°F
56°F
30.05 hPa
6 mph
NW
G: 15 mph
6am
35°F
56°F
30.06 hPa
5 mph
NW
G: 12 mph
8am
41°F
56°F
30.05 hPa
5 mph
NW
G: 14 mph
10am
46°F
56°F
30.02 hPa
7 mph
WNW
G: 16 mph
12pm
44°F
56°F
30.01 hPa
6 mph
NW
G: 20 mph
2pm
47°F
56°F
30.00 hPa
12 mph
NW
G: 27 mph
4pm
44°F
56°F
30.01 hPa
11 mph
NNW
G: 28 mph
6pm
42°F
56°F
30.03 hPa
11 mph
NNW
G: 28 mph
8pm
38°F
56°F
30.09 hPa
11 mph
NNW
G: 26 mph
10pm
35°F
56°F
30.12 hPa
11 mph
NNW
G: 27 mph

Water Temperature History

Trends for Sylvan Lake

Current Temp

Sign in to view

Latest recorded surface temperature.

Lowest in Period

35°F

On Dec 28

Coldest point in the Last 12 Months.

Average in Period

51°F

Typical temp during the Last 12 Months.

Temperature Trend: Last 12 Months

Surface temperature over the selected period.

Key Observations (Last 12 Months)

  • Warmest avg: July (80°F).
  • Coolest avg: January (35°F).
  • Rapid warming often occurs: April → May (+14°F).
  • Sharpest cooling trend: October → November (-16°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm08162432

Wind Direction

339°

Pressure

1017 mb

Cloud Cover

45%

Visibility

12 miles

Daily Pressure Forecast

ThuFriSatSunMonTueWedThuFri0.008.8617.7226.5835.44
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Frequently Asked Questions About Sylvan Lake

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