MEDIAN FLOW RATE · 7 DAY
8,585cfs 25.2% vs avg
Optimal band: 7,058–9,550 cfs
PERIOD HIGH
9,653cfs
PERIOD LOW
7,741cfs
RUNNABLE
88%
last 7 day in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
23.3in
≈ normal
23.26 in of precipitation so far this year — about average for this point in the season (normal 20.65 in).
YTD Total
23.3in
This year so far
Normal to Date
20.6in
30-yr average
Typical Range
14.4–26.3in
10th–90th pct YTD
Departure
+13%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 0.87" · normal 1.89" (0.9–3.1)
Feb: 0.53" · normal 1.93" (0.8–3.3)
Mar: 3.85" · normal 2.66" (1.4–3.9)
Apr: 6.65" · normal 4.24" (2.7–5.8)
May: 1.32" · normal 4.65" (2.2–7.4)
Jun: 9.28" · normal 4.53" (1.6–7.7)
Jul: 0.77" (so far)· normal 3.58" (1.6–5.7)
Aug: normal 3.45" (1.1–5.7)
Sep: normal 3.29" (1.4–6.1)
Oct: normal 2.76" (1.2–5.2)
Nov: normal 2.44" (0.9–4.4)
Dec: normal 2.10" (0.9–3.8)
Baseline 1991–2020 · Source: Open-Meteo01:09 AM
Your History · ROCK RIVER NEAR JOSLIN, IL
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Weather Conditions
WEATHER CONDITIONS
TODAY
84°
69°
MON
84°
66°
TUE
82°
63°
WED
84°
67°
THU
81°
71°
FRI
82°
69°
SAT
81°
68°
FISH INDEX
Temperature
Warm
Wind
Calm
Pressure
Rising — Slow
Moon Phase
Good
DAYLIGHT
SUNRISE
05:32 AM
SUNSET
08:37 PM
15H 5M OF DAYLIGHT
MOON PHASE
Last Quarter
64% illuminated
Station Location
41.5561, -90.1853Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-07-06 00:00 UTC
Site #05446500·USGS
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