MEDIAN FLOW RATE · 1 DAY
405cfs 27.6% vs avg
Optimal band: 359–485 cfs
PERIOD HIGH
452cfs
PERIOD LOW
401cfs
RUNNABLE
100%
last 1 day in band
Gauge Height
129.36ft
Precipitation History
Precipitation · YTD
DryDrier than normal
2026 to date
23.7in
-16% vs normal
23.72 in of precipitation so far this year, 16% below the 30-year normal of 28.4 in for this point in the season.
YTD Total
23.7in
This year so far
Normal to Date
28.4in
30-yr average
Typical Range
21.1–35.9in
10th–90th pct YTD
Departure
-16%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 5.38" · normal 7.33" (4.5–10.4)
Feb: 4.63" · normal 5.35" (2.7–8.1)
Mar: 8.09" · normal 6.10" (3.4–10.2)
Apr: 2.53" · normal 4.80" (2.3–7.4)
May: 1.61" · normal 3.05" (0.9–4.8)
Jun: 1.49" (so far)· normal 1.97" (0.8–3.0)
Jul: normal 0.66" (0.1–1.2)
Aug: normal 1.00" (0.2–2.0)
Sep: normal 2.13" (0.2–3.9)
Oct: normal 5.04" (2.2–7.6)
Nov: normal 8.15" (4.0–12.4)
Dec: normal 7.85" (3.8–11.4)
Baseline 1991–2020 · Source: Open-Meteo10:27 PM
Your History · CHEHALIS RIVER NEAR GRAND MOUND, WA
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Weather Conditions
WEATHER CONDITIONS
TODAY
65°
53°
FRI
62°
54°
SAT
67°
49°
SUN
58°
47°
MON
66°
49°
TUE
63°
51°
WED
60°
51°
FISH INDEX
Temperature
Ideal
Wind
Calm
Pressure
Falling — Active
Moon Phase
Average
DAYLIGHT
SUNRISE
05:19 AM
SUNSET
09:10 PM
15H 51M OF DAYLIGHT0H 0M REMAINING
MOON PHASE
Waxing Gibbous
82% illuminated
Station Location
46.7759, -123.0357Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-25 22:27 UTC
Site #12027500·USGS
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