MEDIAN FLOW RATE · 7 DAY
—cfs
No flow data available
Precipitation History
Precipitation · YTD
NormalNear-normal year
2026 to date
23.5in
≈ normal
23.49 in of precipitation so far this year — about average for this point in the season (normal 20.97 in).
YTD Total
23.5in
This year so far
Normal to Date
21.0in
30-yr average
Typical Range
16.5–25.7in
10th–90th pct YTD
Departure
+12%
vs 30-yr normal
By Month
This year
Typical range
Normal
Jan: 2.79" · normal 2.86" (1.5–4.4)
Feb: 1.45" · normal 2.42" (1.4–3.5)
Mar: 3.93" · normal 2.95" (1.6–4.1)
Apr: 5.38" · normal 3.89" (1.8–6.4)
May: 3.57" · normal 3.84" (1.8–6.3)
Jun: 6.20" · normal 4.06" (2.3–6.7)
Jul: 0.18" (so far)· normal 3.95" (2.5–5.4)
Aug: normal 3.77" (2.7–5.5)
Sep: normal 3.66" (2.3–5.8)
Oct: normal 4.16" (2.2–6.6)
Nov: normal 3.29" (1.9–4.6)
Dec: normal 3.23" (2.0–4.8)
Baseline 1991–2020 · Source: Open-Meteo01:36 AM
Your History · ST. LAWRENCE R AT CORNWALL ONT NR MASSENA NY
Track your history
Sign in to track your sessions at ST. LAWRENCE R AT CORNWALL ONT NR MASSENA NY — best days, monthly trends, and time on the water.
Sign inSPONSORED
Weather Conditions
WEATHER CONDITIONS
TODAY
86°
55°
WED
85°
66°
THU
79°
65°
FRI
78°
62°
SAT
75°
55°
SUN
79°
54°
MON
85°
58°
FISH INDEX
Temperature
Warm
Wind
Calm
Pressure
Stable
Moon Phase
Good
DAYLIGHT
SUNRISE
05:20 AM
SUNSET
08:47 PM
15H 27M OF DAYLIGHT
MOON PHASE
Last Quarter
43% illuminated
Station Location
45.0061, -74.7950Loading map…
DATA · USGS · NOAA · NWS
Site #04264331·USGS
Create a free account to save favorites, set flow alerts, and track conditions