MEDIAN FLOW RATE · 30 DAY
—cfs
No flow data available
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
36.6in
≈ normal
36.61 in of precipitation so far this year — about average for this point in the season (normal 42.53 in).
YTD Total
36.6in
This year so far
Normal to Date
42.5in
30-yr average
Typical Range
31.2–53.3in
10th–90th pct YTD
Departure
-14%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 6.11" · normal 11.80" (6.4–16.6)
Feb: 8.37" · normal 8.62" (4.5–14.7)
Mar: 11.71" · normal 8.79" (5.1–14.7)
Apr: 4.55" · normal 6.58" (3.0–9.8)
May: 2.75" · normal 4.16" (1.8–6.4)
Jun: 3.12" (so far)· normal 2.79" (1.4–4.0)
Jul: normal 0.65" (0.2–1.4)
Aug: normal 0.91" (0.1–2.0)
Sep: normal 2.77" (0.3–5.0)
Oct: normal 6.96" (2.6–12.8)
Nov: normal 11.49" (4.9–15.9)
Dec: normal 12.67" (7.7–19.5)
Baseline 1991–2020 · Source: Open-Meteo02:30 PM
Your History · COLUMBIA RIVER AT BONNEVILLE DAM FOREBAY, WA
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Weather Conditions
WEATHER CONDITIONS
TODAY
63°
55°
SAT
61°
54°
SUN
57°
53°
MON
61°
53°
TUE
70°
51°
WED
64°
50°
THU
70°
48°
FISH INDEX
Temperature
Ideal
Wind
Light
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:20 AM
SUNSET
09:01 PM
15H 41M OF DAYLIGHT3H 52M REMAINING
MOON PHASE
Waxing Gibbous
88% illuminated
Station Location
45.6457, -121.9401Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-26 17:09 UTC
Site #453845121562000·USGS
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