MEDIAN FLOW RATE · 30 DAY
—cfs
No flow data available
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
29.0in
≈ normal
28.97 in of precipitation so far this year — about average for this point in the season (normal 27.67 in).
YTD Total
29.0in
This year so far
Normal to Date
27.7in
30-yr average
Typical Range
21.8–34.1in
10th–90th pct YTD
Departure
+5%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 6.16" · normal 6.91" (4.6–9.0)
Feb: 5.70" · normal 4.79" (2.3–6.9)
Mar: 9.56" · normal 5.46" (2.9–8.8)
Apr: 3.32" · normal 4.49" (2.0–7.2)
May: 2.24" · normal 3.08" (1.7–4.6)
Jun: 1.79" · normal 2.42" (0.9–3.7)
Jul: 0.20" (so far)· normal 1.02" (0.2–2.4)
Aug: normal 1.36" (0.3–2.6)
Sep: normal 2.62" (0.5–5.0)
Oct: normal 5.20" (2.7–7.8)
Nov: normal 7.70" (3.5–11.8)
Dec: normal 7.07" (3.3–9.9)
Baseline 1991–2020 · Source: Open-Meteo02:10 UTC
Your History · GREEN RIVER AT TUKWILA, WA
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Station Location
47.4651, -122.2485Loading map…
DATA · USGS · NOAA · NWS
Site #12113350·USGS
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