MEDIAN FLOW RATE · 30 DAY
—cfs
No flow data available
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
8.9in
≈ normal
8.92 in of precipitation so far this year — about average for this point in the season (normal 10.11 in).
YTD Total
8.9in
This year so far
Normal to Date
10.1in
30-yr average
Typical Range
7.1–13.0in
10th–90th pct YTD
Departure
-12%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 1.49" · normal 2.94" (1.4–4.5)
Feb: 1.07" · normal 2.10" (0.8–3.4)
Mar: 4.33" · normal 1.87" (0.8–3.1)
Apr: 0.76" · normal 1.22" (0.4–2.1)
May: 0.61" · normal 1.28" (0.5–2.2)
Jun: 0.67" (so far)· normal 0.79" (0.3–1.3)
Jul: normal 0.34" (0.0–0.8)
Aug: normal 0.31" (0.0–0.7)
Sep: normal 0.66" (0.0–1.9)
Oct: normal 1.74" (0.7–2.9)
Nov: normal 2.82" (1.2–4.7)
Dec: normal 3.23" (1.5–4.5)
Baseline 1991–2020 · Source: Open-Meteo02:30 PM
Your History · COLUMBIA RIVER AT ROCKY REACH DAM, WA
Track your history
Sign in to track your sessions at COLUMBIA RIVER AT ROCKY REACH DAM, WA — best days, monthly trends, and time on the water.
Sign inSPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
78°
62°
SAT
71°
56°
SUN
77°
51°
MON
78°
52°
TUE
81°
51°
WED
74°
48°
THU
76°
43°
FISH INDEX
Temperature
Warm
Wind
Moderate
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:05 AM
SUNSET
09:02 PM
15H 57M OF DAYLIGHT6H 32M REMAINING
MOON PHASE
Waxing Gibbous
87% illuminated
Station Location
47.5243, -120.3023Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-26 14:30 UTC
Site #12453700·USGS
Create a free account to save favorites, set flow alerts, and track conditions