Lewis County, NY Weather Forecast
County weather hub
Mostly Sunny
Compare major city weather across Lewis County, scan the latest forecast snapshots, and jump into local 7-day outlook pages from one hub.
Mostly sunny, with a high near 55. Northeast wind around 3 mph.
County Weather Overview
This county weather page brings together forecast coverage for Lewis County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.
Current forecast coverage spans 4 of 4 mapped cities in Lewis County.
Page Snapshot
- Page focus
- county weather
- Forecast window
- Oct 15 to Oct 21, 2026
- Latest sync
- Oct 15, 2026 5:55 PM EDT
- Forecast office
- BUF
- Source
- NOAA / NWS
Daily Outlook
This Week in Lewis County
Friday looks like the warmest upcoming period in Lewis County at 66 degrees F.
Saturday Night is the coolest period ahead with temperatures near 27 degrees F.
The strongest winds are forecast for Friday at about 13 to 22 mph SW.
Precipitation is mentioned in 3 upcoming forecast periods.
Forecast Details
- Last updated
- Oct 15, 2026 5:55 PM EDT
- Coverage
- 7 days
- Time zone
- America/New_York
- Forecast office
- BUF
- Radar station
- KTYX
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Rain after midnight. Mostly cloudy, with a low around 42. South wind 2 to 21 mph. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Rain before 11am, then rain and a slight chance of thunderstorms. Cloudy. High near 66, with temperatures falling to around 59 in the afternoon. Southwest wind 13 to 22 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
A chance of rain before 11pm, then a slight chance of rain showers between 11pm and 2am. Cloudy, with a low around 28. Northwest wind 12 to 15 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
Mostly sunny, with a high near 42. Northwest wind 10 to 15 mph.
Mostly clear, with a low around 27. West wind 2 to 7 mph.
Sunny, with a high near 55. Southwest wind 3 to 8 mph.
Mostly clear, with a low around 32. South wind around 6 mph.
Sunny, with a high near 61.
Mostly clear, with a low around 34.
Mostly sunny, with a high near 62.
Partly cloudy, with a low around 34.
Sunny, with a high near 61.
Mostly clear, with a low around 32.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
This Afternoon
Oct 15
|
Mostly Sunny
|
55°F |
3 mph
NE
|
|
Tonight
Oct 15
|
Mostly Cloudy then Rain
|
42°F |
2 to 21 mph
S
|
|
Friday
Oct 16
|
Rain
|
66°F |
13 to 22 mph
SW
|
|
Friday Night
Oct 16
|
Chance Light Rain then Slight Chance Rain Showers
|
28°F |
12 to 15 mph
NW
|
|
Saturday
Oct 17
|
Mostly Sunny
|
42°F |
10 to 15 mph
NW
|
|
Saturday Night
Oct 17
|
Mostly Clear
|
27°F |
2 to 7 mph
W
|
|
Sunday
Oct 18
|
Sunny
|
55°F |
3 to 8 mph
SW
|
|
Sunday Night
Oct 18
|
Mostly Clear
|
32°F |
6 mph
S
|
|
Monday
Oct 19
|
Sunny
|
61°F |
6 mph
S
|
|
Monday Night
Oct 19
|
Mostly Clear
|
34°F |
3 mph
SW
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
62°F |
1 to 5 mph
W
|
|
Tuesday Night
Oct 20
|
Partly Cloudy
|
34°F |
0 to 3 mph
N
|
|
Wednesday
Oct 21
|
Sunny
|
61°F |
0 to 3 mph
N
|
|
Wednesday Night
Oct 21
|
Mostly Clear
|
32°F |
3 mph
NE
|
Major City Forecasts
Live forecast snapshots for major cities across Lewis County.
Coverage
Forecast coverage currently spans 4 of 4 mapped cities in Lewis County.
Largest mapped city population in this region: 2,624.
