Deerfield Lake

Deerfield Lake

Hill City, Pennington County, SD
1mi²
1804.00ft
Directions
Lake Information

Nestled amidst the stunning natural beauty of Pennington County, South Dakota, lies the serene Deerfield Reservoir - a tranquil oasis waiting to be discovered. Located just 20 miles west of Hill City, this enchanting reservoir is managed by the Bureau of Reclamation, ensuring that it remains a pristine and unspoiled natural paradise. With Castle Creek flowing into and out of the reservoir, the waters are teeming with a variety of fish species, making it a popular destination for avid anglers seeking a thrilling and rewarding fishing experience. And during the winter months, the reservoir transforms into a wonderland of ice, offering the perfect opportunity for ice fishing, snowmobiling, and ice skating. But that's not all there is to discover at Deerfield Reservoir. The complex boasts three campgrounds, two boat launches, and two picnic areas, offering ample space to relax, unwind and soak up the breathtaking scenery. And for those who enjoy exploring the great outdoors, the Deerfield Lake Loop Trail (Trail #40L) provides an unforgettable hiking experience, leading you through the stunning forested landscape that surrounds the reservoir. One of the unique features of Deerfield Reservoir is the no-wake restriction, limiting travel on the reservoir to a leisurely five miles per hour. This ensures a peaceful and tranquil environment, perfect for those looking to escape the stresses of everyday life and immerse themselves in the beauty of nature. So why not pack up your fishing gear, lace up your hiking boots, or simply grab a picnic blanket and come and explore the natural wonder of Deerfield Reservoir? You'll be transported to a world of peace and tranquility, where the worries of the world simply fade away, and the only sounds you'll hear are the gentle rustling of leaves, the chirping of birds, and the soothing lapping of the water against the shore.

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Current Conditions

43°F°
Feels like 33°F°
Cloudy
Today's High
44°F°
Today's Low
32°F°

Water Temperature

44°F
Updated: (Apr 30)
Sign in to contribute temps.

Current water temperature for Deerfield Lake is 44°F.

Current Snapshot

Wind10 mph NNW (Gust 18 mph)
Pressure
29.91 inHg
Visibility14 mi
Humidity66%
Cloud Cover100%

Forecast: Thursday, May 1

Day 1 of 9

Hourly Insights

7 AM
35°F°
10 AM
42°F°
12%
1 PM
44°F°
48%
4 PM
42°F°
13%

Temperature

High
44°F°
Low
32°F°

Precipitation

Chance100%
Amount2.5"
Typesnow

Wind

9mph
Avg Speed
Gusts up to
34mph
CalmModerateStrong
Max Speed18 mph

Sun, Moon & UV

Sunrise11:46 AM
Sunset1:59 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)

10:26 PM - 12:56 AM

7:59 AM - 10:29 AM

Minor Times (Good)

2:00 PM - 3:30 PM

6:00 AM - 6:00 AM

Outlook for Thursday at Deerfield Lake

Expect temperatures ranging from 32°F to 44°F. There's a 100% chance of snow, potentially bringing around 2.5" snow. Winds will be averaging 9 mph, with potential gusts reaching up to 34 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 10:26 PM and 7:59 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 Deerfield Lake.

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April 30th 2025

Lake Information

Elevation
1804 ft
Area
1 mi²
Coordinates
44.024, -103.798

Weather Forecast

Thursday

44°F
32°F

Friday

55°F
31°F

Saturday

66°F
36°F

Sunday

66°F
44°F

Monday

60°F
41°F

Tuesday

51°F
37°F

Wednesday

53°F
37°F

Thursday

65°F
42°F

Friday

68°F
46°F
Thursday - 5/1/2025
44°F
32°F
12am
35°F
44°F
30.02 hPa
4 mph
WSW
G: 8 mph
2am
34°F
44°F
30.03 hPa
4 mph
WNW
G: 13 mph
4am
34°F
44°F
30.04 hPa
4 mph
WNW
G: 12 mph
6am
34°F
44°F
30.04 hPa
4 mph
WNW
G: 14 mph
8am
38°F
44°F
30.06 hPa
6 mph
NW
G: 14 mph
10am
42°F
44°F
30.05 hPa
11 mph
NW
G: 18 mph
12pm
43°F
44°F
30.03 hPa
12 mph
NW
G: 22 mph
2pm
41°F
44°F
30.03 hPa
10 mph
WNW
G: 18 mph
4pm
42°F
44°F
30.03 hPa
17 mph
NNW
G: 34 mph
6pm
38°F
44°F
30.07 hPa
14 mph
NNW
G: 31 mph
8pm
36°F
44°F
30.10 hPa
10 mph
NNW
G: 27 mph
10pm
34°F
44°F
30.15 hPa
9 mph
NNW
G: 26 mph

Water Temperature History

Trends for Deerfield Lake

Current Temp

Sign in to view

Latest recorded surface temperature.

Lowest in Period

32°F

On Jan 22

Coldest point in the Last 12 Months.

Average in Period

46°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 (72°F).
  • Coolest avg: February (32°F).
  • Rapid warming often occurs: April → May (+18°F).
  • Sharpest cooling trend: September → October (-17°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm09182736

Wind Direction

257°

Pressure

1016 mb

Cloud Cover

86%

Visibility

10 miles

Daily Pressure Forecast

ThuFriSatSunMonTueWedThuFri0.008.8617.7226.5835.44
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Frequently Asked Questions About Deerfield Lake

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