MEDIAN FLOW RATE · 7 DAY
13cfs 10.6% vs avg
Optimal band: 15–21 cfs
PERIOD HIGH
26cfs
PERIOD LOW
13cfs
RUNNABLE
57%
last 7 day in band
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
18.6in
≈ normal
18.61 in of precipitation so far this year — about average for this point in the season (normal 18.15 in).
YTD Total
18.6in
This year so far
Normal to Date
18.1in
30-yr average
Typical Range
13.3–22.4in
10th–90th pct YTD
Departure
+3%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 1.43" · normal 1.99" (1.0–3.3)
Feb: 0.66" · normal 1.90" (0.8–3.5)
Mar: 4.79" · normal 2.47" (1.3–3.9)
Apr: 6.01" · normal 4.19" (2.4–5.8)
May: 0.83" · normal 4.31" (1.7–7.0)
Jun: 4.89" (so far)· normal 3.80" (1.9–6.0)
Jul: normal 3.53" (2.2–4.8)
Aug: normal 3.52" (1.7–5.6)
Sep: normal 2.92" (1.3–5.5)
Oct: normal 3.07" (1.2–5.3)
Nov: normal 2.36" (1.1–4.0)
Dec: normal 2.12" (0.9–3.9)
Baseline 1991–2020 · Source: Open-Meteo12:10 AM
Your History · BOONE CREEK NEAR MC HENRY, IL
Track your history
Sign in to track your sessions at BOONE CREEK NEAR MC HENRY, IL — best days, monthly trends, and time on the water.
Sign inSPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
71°
57°
THU
75°
60°
FRI
70°
55°
SAT
76°
55°
SUN
81°
61°
MON
88°
74°
TUE
90°
75°
FISH INDEX
Temperature
Warm
Wind
Light
Pressure
Stable
Moon Phase
Average
DAYLIGHT
SUNRISE
05:17 AM
SUNSET
08:33 PM
15H 16M OF DAYLIGHT20H 23M REMAINING
MOON PHASE
Waxing Gibbous
74% illuminated
Station Location
42.3207, -88.3126Loading map…
DATA · USGS · NOAA · NWSUPDATED 2026-06-25 00:10 UTC
Site #05549000·USGS
Create a free account to save favorites, set flow alerts, and track conditions