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Conditions / The week on your water

7-Day River & Weather Forecast

What to wear. When rain arrives. How the river may respond. Pick your river for the weather ahead, the water right now, and the changes to watch before you leave.

Full river report →

Eighteenmile Creek (Niagara)

Local river weather · All times Eastern.

Measured river flow

87 CFS

Nov 5, 8:15 AM EST

Gauge height

6.06 ft

Feet at the gauge

Measured water temperature

58.1°F

Nov 5, 8:00 AM EST · gauge 04219768

Flow change · about 6 hours

0%

Compared with Nov 5, 3:15 AM EST

What just happened?

Rain in the last 24 hours

0.10 inches through Nov 5, 7:00 AM EST.

NWS grid estimate

What the water is doing

Flow has changed little over about six hours.

Weather alerts

No current alerts listed. NWS weather →

The next seven days

Weather refreshed Nov 5, 7:02 AM EST · River outlook issued Nov 5, 5:00 AM EST

How the river may change

CFS
Supported estimateBaseline onlyReading at issue time
Seven daily values for Eighteenmile Creek (Niagara). Exact values and missing coverage are listed in the expandable data table below. Dashed segments and hollow markers are baseline fallbacks, not supported daily predictions. Lines between daily targets are visual guides, not an hourly hydrograph. 0 50 100 150 ThuFriSatSunMonTueWed Thu, Nov 5 · River flow: 87 CFS · reading at issue time 87 Fri, Nov 6 · River flow: 86 CFS · forecast estimate 86 Sat, Nov 7 · River flow: 85 CFS · forecast estimate 85 Sun, Nov 8 · River flow: 85 CFS · forecast estimate 85 Mon, Nov 9 · River flow: 85 CFS · forecast estimate 85 Tue, Nov 10 · River flow: 85 CFS · forecast estimate 85 Wed, Nov 11 · River flow: 85 CFS · forecast estimate 85

Daily flow outlook · Dashed segments mark baseline-only values.

View flow values & dates
How the river may change · CFS
DateRiver flow Basis
Thu, Nov 587 CFS Reading at issue time
Fri, Nov 686 CFS Forecast estimate
Sat, Nov 785 CFS Forecast estimate
Sun, Nov 885 CFS Forecast estimate
Mon, Nov 985 CFS Forecast estimate
Tue, Nov 1085 CFS Forecast estimate
Wed, Nov 1185 CFS Forecast estimate

Day & night air temperatures

°F
DayNight
Seven daily values for Eighteenmile Creek (Niagara). Exact values and missing coverage are listed in the expandable data table below. 20 40 60 80 ThuFriSatSunMonTueWed Thu, Nov 5 · Day: 65 °F 65 Fri, Nov 6 · Day: 59 °F 59 Sat, Nov 7 · Day: 54 °F 54 Sun, Nov 8 · Day: 56 °F 56 Mon, Nov 9 · Day: 55 °F 55 Tue, Nov 10 · Day: 59 °F 59 Wed, Nov 11 · Day: 53 °F 53 Thu, Nov 5 · Night: 49 °F 49 Fri, Nov 6 · Night: 40 °F 40 Sat, Nov 7 · Night: 36 °F 36 Sun, Nov 8 · Night: 36 °F 36 Mon, Nov 9 · Night: 40 °F 40 Tue, Nov 10 · Night: 36 °F 36 Wed, Nov 11 · Night: 32 °F 32

Forecast air temperatures · Day and following night.

View temperature values & dates
Day & night air temperatures · °F
DateDayNight
Thu, Nov 565 °F49 °F
Fri, Nov 659 °F40 °F
Sat, Nov 754 °F36 °F
Sun, Nov 856 °F36 °F
Mon, Nov 955 °F40 °F
Tue, Nov 1059 °F36 °F
Wed, Nov 1153 °F32 °F

When precipitation is expected

in
DayNight
Seven daily values for Eighteenmile Creek (Niagara). Exact values and missing coverage are listed in the expandable data table below. 0.00 0.05 0.10 0.15 ThuFriSatSunMonTueWed Thu, Nov 5 · Day: 0.01 in Fri, Nov 6 · Day: 0.07 in Sat, Nov 7 · Day: 0.09 in Thu, Nov 5 · Night: 0.04 in Fri, Nov 6 · Night: 0.10 in Sat, Nov 7 · Night: 0.01 in

Liquid-equivalent inches · Day and following night.

View precipitation values & dates
When precipitation is expected · in
DateDayNight
Thu, Nov 50.01 in0.04 in
Fri, Nov 60.07 in0.10 in
Sat, Nov 70.09 in0.01 in
Sun, Nov 8UnavailableUnavailable
Mon, Nov 9UnavailableUnavailable
Tue, Nov 10UnavailableUnavailable
Wed, Nov 11UnavailableUnavailable

Thu
Nov 5

Day

65°F

Slight Chance Rain Showers then Mostly Cloudy

Wind SW 9 to 20 mph

Precip. chance 18%

Precip. amount 0.01 in

Today details

A slight chance of rain showers before 8am. Mostly cloudy. High near 65, with temperatures falling to around 59 in the afternoon. Southwest wind 9 to 20 mph, with gusts as high as 30 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.

Starts Thu 7:00 AM EST

Night

49°F

Chance Rain Showers

Wind SW 3 to 12 mph

Precip. chance 44%

Precip. amount 0.04 in

Tonight details

A chance of rain showers after 10pm. Cloudy, with a low around 49. Southwest wind 3 to 12 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.

Starts Thu 6:00 PM EST

River outlook

87 CFS

Reading at issue time

This river

Water temperature unavailable

Clarity Clear · estimated

River timing & sources
Projected flow:
87.4 CFS
Flow basis:
Index snapshot retained at forecast issuance; River component retained at forecast issuance
Target river gauge
Flow target:
Not recorded in this edition
Flow source issued:
Not recorded in this edition
Retained Index snapshot time:
Nov 5, 2026 5:00 AM EST
Retained temperature value:
Unavailable
Derived clarity estimate:
Clear; visibility unverified
Model confidence:
95%; not a success probability
Historical edition: scoring-policy metadata was not recorded. Values have not been recalculated.

Fri
Nov 6

Day

59°F

Rain Showers Likely

Wind SW 3 to 7 mph

Precip. chance 70%

Precip. amount 0.07 in

Friday details

Rain showers likely. Cloudy, with a high near 59. Southwest wind 3 to 7 mph. Chance of precipitation is 70%. New rainfall amounts less than a tenth of an inch possible.

Starts Fri 6:00 AM EST

Night

40°F

Rain Showers

Wind W 5 mph

Precip. chance 78%

Precip. amount 0.10 in

Friday Night details

Rain showers. Mostly cloudy, with a low around 40. West wind around 5 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.

Starts Fri 6:00 PM EST

River outlook

86 CFS

Recent-trend estimate

This river

Water 57°F estimated

Clarity Clear · estimated

River timing & sources
Projected flow:
85.8 CFS
Flow basis:
Recent flow trajectory model
Target river gauge
Flow target:
Nov 6, 2026 12:00 PM EST
Flow source issued:
Not recorded in this edition
Temperature estimate:
57°F; model estimate, not a target-time measurement
Derived clarity estimate:
Clear; visibility unverified
Model confidence:
58%; not a success probability
Scoring policy:
species-ranges-v2-2026-10-21
Scoring reference:
100–230 CFS (manual); not a wading limit

Sat
Nov 7

Day

54°F

Rain Showers

Wind W 5 to 10 mph

Precip. chance 91%

Precip. amount 0.09 in

Saturday details

Rain showers. Cloudy, with a high near 54. West wind 5 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.

Starts Sat 6:00 AM EST

Night

36°F

Rain Showers

Wind NW 9 mph

Precip. chance 87%

Precip. amount 0.01 in

Saturday Night details

Rain showers before 1am. Mostly cloudy, with a low around 36. Northwest wind around 9 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.

Starts Sat 6:00 PM EST

River outlook

85 CFS

Recent-trend estimate

This river

Water 55.9°F estimated

Clarity Clear · estimated

River timing & sources
Projected flow:
84.8 CFS
Flow basis:
Recent flow trajectory model
Target river gauge
Flow target:
Nov 7, 2026 12:00 PM EST
Flow source issued:
Not recorded in this edition
Temperature estimate:
55.9°F; model estimate, not a target-time measurement
Derived clarity estimate:
Clear; visibility unverified
Model confidence:
53%; not a success probability
Scoring policy:
species-ranges-v2-2026-10-21
Scoring reference:
100–230 CFS (manual); not a wading limit

Sun
Nov 8

Day

56°F

Mostly Sunny

Wind W 9 to 17 mph

Precip. chance 11%

Precip. amount unavailable

Sunday details

Mostly sunny, with a high near 56. West wind 9 to 17 mph, with gusts as high as 28 mph.

Starts Sun 6:00 AM EST

Night

36°F

Chance Rain Showers

Wind W 12 mph

Precip. chance 37%

Precip. amount unavailable

Sunday Night details

A chance of rain showers after 7pm. Partly cloudy, with a low around 36. West wind around 12 mph, with gusts as high as 22 mph. Chance of precipitation is 40%.

Starts Sun 6:00 PM EST

River outlook

85 CFS

Recent-trend estimate

This river

Water 56.5°F estimated

Clarity Clear · estimated

River timing & sources
Projected flow:
84.8 CFS
Flow basis:
Recent flow trajectory model
Target river gauge
Flow target:
Nov 8, 2026 12:00 PM EST
Flow source issued:
Not recorded in this edition
Temperature estimate:
56.5°F; model estimate, not a target-time measurement
Derived clarity estimate:
Clear; visibility unverified
Model confidence:
48%; not a success probability
Scoring policy:
species-ranges-v2-2026-10-21
Scoring reference:
100–230 CFS (manual); not a wading limit

Mon
Nov 9

Day

55°F

Slight Chance Rain Showers

Wind W 10 to 14 mph

Precip. chance 24%

Precip. amount unavailable

Monday details

A slight chance of rain showers before 1pm. Mostly sunny, with a high near 55.

Starts Mon 6:00 AM EST

Night

40°F

Partly Cloudy

Wind SW 8 to 13 mph

Precip. chance 12%

Precip. amount unavailable

Monday Night details

Partly cloudy, with a low around 40.

Starts Mon 6:00 PM EST

River outlook

85 CFS

Recent-trend estimate

This river

Water 56.5°F estimated

Clarity Clear · estimated

River timing & sources
Projected flow:
84.8 CFS
Flow basis:
Recent flow trajectory model
Target river gauge
Flow target:
Nov 9, 2026 12:00 PM EST
Flow source issued:
Not recorded in this edition
Temperature estimate:
56.5°F; model estimate, not a target-time measurement
Derived clarity estimate:
Clear; visibility unverified
Model confidence:
43%; not a success probability
Scoring policy:
species-ranges-v2-2026-10-21
Scoring reference:
100–230 CFS (manual); not a wading limit

Tue
Nov 10

Day

59°F

Mostly Sunny

Wind SW 13 to 16 mph

Precip. chance 13%

Precip. amount unavailable

Tuesday details

Mostly sunny, with a high near 59.

Starts Tue 6:00 AM EST

Night

36°F

Partly Cloudy

Wind W 6 to 12 mph

Precip. chance 14%

Precip. amount unavailable

Tuesday Night details

Partly cloudy, with a low around 36.

Starts Tue 6:00 PM EST

River outlook

85 CFS

Recent-trend estimate

This river

Water 57.3°F estimated

Clarity Clear · estimated

River timing & sources
Projected flow:
84.8 CFS
Flow basis:
Recent flow trajectory model
Target river gauge
Flow target:
Nov 10, 2026 12:00 PM EST
Flow source issued:
Not recorded in this edition
Temperature estimate:
57.3°F; model estimate, not a target-time measurement
Derived clarity estimate:
Clear; visibility unverified
Model confidence:
39%; not a success probability
Scoring policy:
species-ranges-v2-2026-10-21
Scoring reference:
100–230 CFS (manual); not a wading limit

Wed
Nov 11

Day

53°F

Mostly Sunny

Wind W 6 to 10 mph

Precip. chance 14%

Precip. amount unavailable

Veterans Day details

Mostly sunny, with a high near 53.

Starts Wed 6:00 AM EST

Night

32°F

Mostly Cloudy

Wind NW 3 to 7 mph

Precip. chance 6%

Precip. amount unavailable

Wednesday Night details

Mostly cloudy, with a low around 32.

Starts Wed 6:00 PM EST

River outlook

85 CFS

Recent-trend estimate

This river

Water 56.5°F estimated

Clarity Clear · estimated

River timing & sources
Projected flow:
84.8 CFS
Flow basis:
Recent flow trajectory model
Target river gauge
Flow target:
Nov 11, 2026 12:00 PM EST
Flow source issued:
Not recorded in this edition
Temperature estimate:
56.5°F; model estimate, not a target-time measurement
Derived clarity estimate:
Clear; visibility unverified
Model confidence:
35%; not a success probability
Scoring policy:
species-ranges-v2-2026-10-21
Scoring reference:
100–230 CFS (manual); not a wading limit
Plan the next 48 hours · hour by hour
Available saved hourly weather at this river
Time (Eastern)AirWindPrecip. chanceWeather
Thu 9 AM EST62°FSW 13 mph7%Partly Sunny
Thu 10 AM EST63°FSW 14 mph5%Mostly Cloudy
Thu 11 AM EST64°FSW 16 mph3%Mostly Cloudy
Thu 12 PM EST64°FSW 18 mph2%Partly Sunny
Thu 1 PM EST64°FSW 20 mph2%Partly Sunny
Thu 2 PM EST63°FSW 20 mph2%Partly Sunny
Thu 3 PM EST62°FW 18 mph2%Partly Sunny
Thu 4 PM EST61°FW 17 mph3%Partly Sunny
Thu 5 PM EST59°FW 15 mph5%Mostly Cloudy
Thu 6 PM EST56°FSW 12 mph4%Mostly Cloudy
Thu 7 PM EST55°FSW 9 mph7%Mostly Cloudy
Thu 8 PM EST53°FSW 7 mph8%Mostly Cloudy
Thu 9 PM EST53°FSW 6 mph9%Cloudy
Thu 10 PM EST52°FSW 5 mph18%Slight Chance Rain Showers
Thu 11 PM EST52°FSW 5 mph27%Chance Rain Showers
Fri 12 AM EST52°FSW 5 mph32%Chance Rain Showers
Fri 1 AM EST52°FS 5 mph36%Chance Rain Showers
Fri 2 AM EST51°FS 5 mph40%Chance Rain Showers
Fri 3 AM EST50°FSW 3 mph43%Chance Rain Showers
Fri 4 AM EST50°FS 5 mph44%Chance Rain Showers
Fri 5 AM EST50°FS 3 mph44%Chance Rain Showers
Fri 6 AM EST50°FS 3 mph57%Rain Showers Likely
Fri 7 AM EST49°FSW 3 mph70%Rain Showers Likely
Fri 8 AM EST51°FS 3 mph70%Rain Showers Likely
Fri 9 AM EST55°FSW 5 mph70%Rain Showers Likely
Fri 10 AM EST57°FSW 6 mph57%Rain Showers Likely
Fri 11 AM EST58°FSW 7 mph57%Rain Showers Likely
Fri 12 PM EST58°FSW 7 mph57%Rain Showers Likely
Fri 1 PM EST58°FW 6 mph42%Chance Rain Showers
Fri 2 PM EST58°FW 6 mph42%Chance Rain Showers
Fri 3 PM EST57°FW 5 mph42%Chance Rain Showers
Fri 4 PM EST56°FW 5 mph57%Rain Showers Likely
Fri 5 PM EST54°FW 3 mph57%Rain Showers Likely
Fri 6 PM EST51°FW 3 mph57%Rain Showers Likely
Fri 7 PM EST49°FW 5 mph78%Rain Showers
Fri 8 PM EST48°FW 3 mph78%Rain Showers
Fri 9 PM EST47°FW 3 mph78%Rain Showers
Fri 10 PM EST46°FW 3 mph78%Rain Showers
Fri 11 PM EST46°FW 3 mph78%Rain Showers
Sat 12 AM EST46°FW 3 mph78%Rain Showers
Sat 1 AM EST45°FW 3 mph71%Rain Showers Likely
Sat 2 AM EST44°FW 3 mph71%Rain Showers Likely
Sat 3 AM EST43°FW 5 mph71%Rain Showers Likely
Sat 4 AM EST42°FW 5 mph71%Rain Showers Likely
Sat 5 AM EST41°FW 5 mph71%Rain Showers Likely
Sat 6 AM EST41°FW 5 mph71%Rain Showers Likely

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