MEDIAN FLOW RATE · 1 YEAR
10,200cfs 39.3% vs avg
Optimal band: 5,610–7,590 cfs
PERIOD HIGH
28,111cfs
PERIOD LOW
1,889cfs
RUNNABLE
35%
last 1 year in band
Precipitation History
Precipitation · YTD
DryDrier than normal
2026 to date
7.2in
-26% vs normal
7.21 in of precipitation so far this year, 26% below the 30-year normal of 9.75 in for this point in the season.
YTD Total
7.2in
This year so far
Normal to Date
9.8in
30-yr average
Typical Range
7.1–12.3in
10th–90th pct YTD
Departure
-26%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 0.52" · normal 0.52" (0.2–0.9)
Feb: 0.68" · normal 0.51" (0.2–0.8)
Mar: 0.68" · normal 0.87" (0.3–1.6)
Apr: 0.51" · normal 1.55" (0.7–2.9)
May: 1.39" · normal 2.65" (0.9–5.2)
Jun: 2.80" · normal 2.79" (1.3–4.2)
Jul: 0.65" (so far)· normal 1.98" (0.5–3.8)
Aug: normal 1.70" (0.5–3.0)
Sep: normal 1.63" (0.5–3.0)
Oct: normal 1.22" (0.7–1.9)
Nov: normal 0.77" (0.2–1.4)
Dec: normal 0.60" (0.2–0.9)
Baseline 1991–2020 · Source: Open-Meteo03:38 PM
Your History · Yellowstone River near Sidney MT
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Weather Conditions
WEATHER CONDITIONS
TODAY
88°
62°
FRI
95°
64°
SAT
108°
68°
SUN
115°
76°
MON
101°
77°
TUE
102°
69°
WED
100°
73°
FISH INDEX
Temperature
Too Hot
Wind
Light
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:08 AM
SUNSET
08:54 PM
15H 46M OF DAYLIGHT
MOON PHASE
Waning Crescent
23% illuminated
Station Location
47.6774, -104.1554Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-10 00:00 UTC
Site #06329500·USGS
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