MEDIAN FLOW RATE · 30 DAY
—cfs
No flow data available
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
6.8in
≈ normal
6.76 in of precipitation so far this year — about average for this point in the season (normal 6.8 in).
YTD Total
6.8in
This year so far
Normal to Date
6.8in
30-yr average
Typical Range
4.4–8.8in
10th–90th pct YTD
Departure
-1%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 0.88" · normal 1.99" (0.7–3.4)
Feb: 1.08" · normal 1.36" (0.7–2.5)
Mar: 2.84" · normal 1.20" (0.5–2.3)
Apr: 1.02" · normal 0.84" (0.2–1.4)
May: 0.46" · normal 0.93" (0.3–1.6)
Jun: 0.49" (so far)· normal 0.55" (0.1–0.9)
Jul: normal 0.23" (0.0–0.6)
Aug: normal 0.20" (0.0–0.5)
Sep: normal 0.40" (0.0–1.2)
Oct: normal 1.17" (0.3–2.1)
Nov: normal 1.80" (0.7–3.2)
Dec: normal 2.20" (0.8–3.2)
Baseline 1991–2020 · Source: Open-Meteo02:25 PM
Your History · COLUMBIA RIVER BELOW ROCK ISLAND DAM, WA
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Weather Conditions
WEATHER CONDITIONS
TODAY
75°
63°
SAT
72°
58°
SUN
80°
52°
MON
69°
53°
TUE
82°
52°
WED
77°
50°
THU
77°
46°
FISH INDEX
Temperature
Ideal
Wind
Moderate
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:05 AM
SUNSET
09:01 PM
15H 56M OF DAYLIGHT6H 36M REMAINING
MOON PHASE
Waxing Gibbous
87% illuminated
Station Location
47.3324, -120.0812Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-26 14:25 UTC
Site #12462600·USGS
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