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

54°F°
Feels like 48°F°
MostlyCloudy
Today's High
53°F°
Today's Low
39°F°

Water Temperature

37°F
Updated: (May 10)
Sign in to contribute temps.

Current water temperature for Kachess Lake is 37°F.

Current Snapshot

Wind8 mph WNW (Gust 15 mph)
Pressure
29.96 inHg
Visibility21 mi
Humidity56%
Cloud Cover79%

Forecast: Sunday, May 11

Day 1 of 9

Hourly Insights

7 AM
41°F°
10 AM
50°F°
1 PM
52°F°
9%
4 PM
49°F°
22%

Temperature

High
53°F°
Low
39°F°

Precipitation

Chance43%
Amount0.06"
Typerain

Wind

4mph
Avg Speed
Gusts up to
19mph
CalmModerateStrong
Max Speed8 mph

Sun, Moon & UV

Sunrise12:33 PM
Sunset3:30 AM
Moon PhasewaxingGibbous
Max UV Index4 (Moderate)

Solunar Fishing Forecast

Action Rating
4/5

Todays action is rated a 4 (scale is 0 thru 5, 5 is the best)

Major Times (Best)

7:00 AM - 7:00 AM

2:30 PM - 5:00 PM

Minor Times (Good)

2:35 AM - 4:05 AM

11:14 AM - 12:44 PM

Outlook for Sunday at Kachess Lake

Expect temperatures ranging from 39°F to 53°F. There's a 43% chance of rain, potentially bringing around 0.06" rain. Winds will be averaging 4 mph, with potential gusts reaching up to 19 mph. The maximum UV index will be 4 (Moderate), so plan sun protection accordingly. For anglers, today's fishing action is rated 4/5 (Todays action is rated a 4 (scale is 0 thru 5, 5 is the best)). Look for the best bite times during the major periods around 7:00 AM and 2:30 PM, or try the minor windows near 2:35 AM and 11:14 AM for potential early morning or evening action. Check back for the latest conditions and forecasts for Kachess Lake.

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May 11th 2025

Lake Information

Elevation
689 ft
Area
4378 mi²
Coordinates
47.267, -121.206

Weather Forecast

Sunday

53°F
39°F

Monday

49°F
37°F

Tuesday

51°F
41°F

Wednesday

48°F
39°F

Thursday

49°F
38°F

Friday

51°F
39°F

Saturday

51°F
41°F

Sunday

51°F
40°F

Monday

57°F
40°F
Sunday - 5/11/2025
53°F
39°F
12am
44°F
37°F
29.89 hPa
3 mph
WNW
G: 10 mph
2am
41°F
37°F
29.89 hPa
3 mph
WNW
G: 8 mph
4am
40°F
37°F
29.87 hPa
2 mph
NW
G: 3 mph
6am
39°F
37°F
29.86 hPa
2 mph
NNW
G: 4 mph
8am
44°F
37°F
29.83 hPa
3 mph
NW
G: 5 mph
10am
50°F
37°F
29.79 hPa
3 mph
NW
G: 7 mph
12pm
53°F
37°F
29.77 hPa
4 mph
NW
G: 10 mph
2pm
50°F
37°F
29.76 hPa
6 mph
W
G: 14 mph
4pm
49°F
37°F
29.75 hPa
6 mph
WNW
G: 13 mph
6pm
44°F
37°F
29.76 hPa
8 mph
WNW
G: 19 mph
8pm
43°F
37°F
29.75 hPa
7 mph
WNW
G: 15 mph
10pm
41°F
37°F
29.75 hPa
6 mph
WNW
G: 16 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

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 (70°F).
  • Coolest avg: December (37°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

12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm05101520

Wind Direction

303°

Pressure

1012 mb

Cloud Cover

50%

Visibility

16 miles

Daily Pressure Forecast

SunMonTueWedThuFriSatSunMon0.008.8617.7226.5835.44
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Frequently Asked Questions About Kachess Lake

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