MEDIAN FLOW RATE · 30 DAY
139cfs 24.2% vs avg
Optimal band: 186–252 cfs
PERIOD HIGH
675cfs
PERIOD LOW
139cfs
RUNNABLE
39%
last 30 day in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
24.6in
≈ normal
24.55 in of precipitation so far this year — about average for this point in the season (normal 28.47 in).
YTD Total
24.6in
This year so far
Normal to Date
28.5in
30-yr average
Typical Range
21.1–35.9in
10th–90th pct YTD
Departure
-14%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 5.73" · normal 7.33" (4.4–10.4)
Feb: 4.66" · normal 5.35" (2.7–8.1)
Mar: 7.83" · normal 6.11" (3.5–10.1)
Apr: 3.27" · normal 4.80" (2.3–7.2)
May: 1.60" · normal 3.06" (1.0–4.8)
Jun: 1.45" (so far)· normal 1.98" (0.9–3.2)
Jul: normal 0.67" (0.1–1.2)
Aug: normal 1.00" (0.2–2.0)
Sep: normal 2.10" (0.2–3.8)
Oct: normal 4.97" (2.2–7.6)
Nov: normal 8.12" (4.0–12.4)
Dec: normal 7.81" (3.8–11.4)
Baseline 1991–2020 · Source: Open-Meteo12:08 AM
Your History · CHEHALIS RIVER NEAR ADNA, WA
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Weather Conditions
WEATHER CONDITIONS
TODAY
65°
54°
FRI
64°
54°
SAT
66°
51°
SUN
60°
48°
MON
63°
54°
TUE
64°
52°
WED
63°
47°
FISH INDEX
Temperature
Ideal
Wind
Light
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:20 AM
SUNSET
09:09 PM
15H 49M OF DAYLIGHT17H 59M REMAINING
MOON PHASE
Waxing Gibbous
84% illuminated
Station Location
46.6257, -123.1018Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-26 03:10 UTC
Site #12021800·USGS
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