Kachess Lake

Kachess Lake

Kittitas County, WA
4378mi²
689.00ft
Directions
Lake Information

Kachess Lake is a lake and reservoir along the course of the Kachess River in Washington state, US. The upper part of the lake, north of a narrows, is called Little Kachess Lake. The Kachess River flows into the lake from the north, and out from the south. Kachess Lake is the middle of the three large lakes which straddle Interstate 90 north of the Yakima River in the Cascade Range. The other two are Cle Elum Lake, the easternmost which is also north of I-90 and Keechelus Lake, the westernmost, which is south of I-90.

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Current Conditions

57°F°
Feels like 57°F°
MostlyClear
Today's High
67°F°
Today's Low
40°F°

Water Temperature

39°F
Updated: (Apr 29)
Sign in to contribute temps.

Current water temperature for Kachess Lake is 39°F.

Current Snapshot

Wind7 mph WNW (Gust 13 mph)
Pressure
30.06 inHg
Visibility19 mi
Humidity52%
Cloud Cover17%

Forecast: Thursday, May 1

Day 1 of 9

Hourly Insights

7 AM
44°F°
10 AM
55°F°
1 PM
64°F°
4 PM
67°F°

Temperature

High
67°F°
Low
40°F°

Precipitation

Chance0%
Amount0.00"
Typeclear

Wind

5mph
Avg Speed
Gusts up to
21mph
CalmModerateStrong
Max Speed11 mph

Sun, Moon & UV

Sunrise12:48 PM
Sunset3:16 AM
Moon PhasewaxingCrescent
Max UV Index8 (Very High)

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)

11:38 PM - 2:08 AM

7:00 AM - 7:00 AM

Minor Times (Good)

2:55 PM - 4:25 PM

7:21 AM - 8:51 AM

Outlook for Thursday at Kachess Lake

Expect temperatures ranging from 40°F to 67°F. Skies look mostly clear with little chance of precipitation. Winds will be averaging 5 mph, with potential gusts reaching up to 21 mph. The maximum UV index will be 8 (Very High), 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 11:38 PM and 7:00 AM, or try the minor windows near 2:55 PM and 7:21 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Kachess Lake.

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April 30th 2025

Lake Information

Elevation
689 ft
Area
4378 mi²
Coordinates
47.267, -121.206

Weather Forecast

Thursday

67°F
40°F

Friday

68°F
43°F

Saturday

47°F
36°F

Sunday

49°F
34°F

Monday

63°F
36°F

Tuesday

69°F
43°F

Wednesday

67°F
48°F

Thursday

53°F
41°F

Friday

61°F
37°F
Thursday - 5/1/2025
67°F
40°F
12am
43°F
39°F
30.08 hPa
2 mph
NW
G: 3 mph
2am
41°F
39°F
30.08 hPa
1 mph
W
G: 2 mph
4am
40°F
39°F
30.08 hPa
1 mph
SE
G: 2 mph
6am
43°F
39°F
30.07 hPa
3 mph
SE
G: 6 mph
8am
49°F
39°F
30.05 hPa
4 mph
SE
G: 9 mph
10am
55°F
39°F
30.03 hPa
8 mph
ESE
G: 18 mph
12pm
60°F
39°F
30.01 hPa
11 mph
ESE
G: 21 mph
2pm
65°F
39°F
29.98 hPa
9 mph
ESE
G: 20 mph
4pm
67°F
39°F
29.94 hPa
9 mph
ESE
G: 17 mph
6pm
65°F
39°F
29.92 hPa
7 mph
ESE
G: 15 mph
8pm
59°F
39°F
29.91 hPa
5 mph
ESE
G: 10 mph
10pm
53°F
39°F
29.95 hPa
3 mph
ESE
G: 9 mph

Water Temperature History

Trends for Kachess Lake

Current Temp

Sign in to view

Latest recorded surface temperature.

Lowest in Period

33°F

On Jan 1

Coldest point in the Last 12 Months.

Average in Period

47°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 (70°F).
  • Coolest avg: January (36°F).
  • Rapid warming often occurs: June → July (+15°F).
  • Sharpest cooling trend: September → October (-13°F).

Weather Forecast

Wind speed and pressure trends

Hourly Wind Forecast

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm06121824

Wind Direction

317°

Pressure

1018 mb

Cloud Cover

7%

Visibility

16 miles

Daily Pressure Forecast

ThuFriSatSunMonTueWedThuFri0.008.8617.7226.5835.44
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Frequently Asked Questions About Kachess Lake

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