MEDIAN FLOW RATE · 30 DAY
—cfs
No flow data available
Precipitation History
Precipitation · YTD
DryDrier than normal
2026 to date
5.5in
-36% vs normal
5.49 in of precipitation so far this year, 36% below the 30-year normal of 8.61 in for this point in the season.
YTD Total
5.5in
This year so far
Normal to Date
8.6in
30-yr average
Typical Range
5.8–12.2in
10th–90th pct YTD
Departure
-36%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 0.86" · normal 1.99" (0.9–3.2)
Feb: 0.92" · normal 1.40" (0.7–2.2)
Mar: 0.99" · normal 1.73" (0.8–3.4)
Apr: 1.39" · normal 1.28" (0.4–2.1)
May: 0.58" · normal 1.34" (0.4–2.3)
Jun: 0.74" (so far)· normal 0.98" (0.3–2.0)
Jul: normal 0.45" (0.0–0.9)
Aug: normal 0.32" (0.0–0.8)
Sep: normal 0.55" (0.1–1.3)
Oct: normal 1.34" (0.4–2.1)
Nov: normal 2.06" (0.8–3.4)
Dec: normal 2.46" (0.9–4.1)
Baseline 1991–2020 · Source: Open-Meteo02:24 PM
Your History · COLUMBIA RIVER AT GRAND COULEE, WA
Track your history
Sign in to track your sessions at COLUMBIA RIVER AT GRAND COULEE, WA — best days, monthly trends, and time on the water.
Sign inSPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
77°
58°
SAT
70°
56°
SUN
81°
54°
MON
75°
59°
TUE
79°
54°
WED
76°
52°
THU
77°
49°
FISH INDEX
Temperature
Ideal
Wind
Light
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
04:58 AM
SUNSET
08:59 PM
16H 1M OF DAYLIGHT6H 34M REMAINING
MOON PHASE
Waxing Gibbous
87% illuminated
Station Location
47.9654, -118.9828Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-26 14:25 UTC
Site #12436500·USGS
Create a free account to save favorites, set flow alerts, and track conditions
