MEDIAN FLOW RATE · 1 DAY
—cfs
No flow data available
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
25.4in
≈ normal
25.35 in of precipitation so far this year — about average for this point in the season (normal 28.69 in).
YTD Total
25.4in
This year so far
Normal to Date
28.7in
30-yr average
Typical Range
21.1–36.2in
10th–90th pct YTD
Departure
-12%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 5.70" · normal 7.45" (4.5–10.8)
Feb: 4.84" · normal 5.35" (2.7–8.1)
Mar: 8.59" · normal 6.15" (3.5–10.4)
Apr: 2.73" · normal 4.86" (2.3–7.8)
May: 1.87" · normal 3.08" (0.9–4.8)
Jun: 1.62" (so far)· normal 1.99" (1.1–2.9)
Jul: normal 0.66" (0.1–1.2)
Aug: normal 1.01" (0.2–2.0)
Sep: normal 2.17" (0.2–4.3)
Oct: normal 5.08" (2.2–7.6)
Nov: normal 8.27" (4.0–12.4)
Dec: normal 7.93" (3.8–11.4)
Baseline 1991–2020 · Source: Open-Meteo11:55 PM
Your History · CHEHALIS RIVER NEAR ROCHESTER, WA
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Weather Conditions
WEATHER CONDITIONS
TODAY
66°
54°
FRI
61°
54°
SAT
66°
49°
SUN
60°
48°
MON
64°
54°
TUE
63°
53°
WED
63°
52°
FISH INDEX
Temperature
Ideal
Wind
Light
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
83% illuminated
Station Location
46.8068, -123.1201Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-25 23:55 UTC
Site #12028060·USGS
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