San Juan County, CO Weather Forecast

County weather hub

65°

Showers And Thunderstorms

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Saturday, July 18, 2026

Wind: 0 mph

Today

Showers and thunderstorms after 9am. Mostly cloudy, with a high near 65. Southeast wind around 0 mph. Chance of precipitation is 90%.

County weather hub

County Weather Overview

This county weather page brings together forecast coverage for San Juan County so visitors can compare temperatures, wind, and conditions across the region without hopping between unrelated pages.

Current forecast coverage spans 0 of 0 mapped cities in San Juan County.

Page Snapshot

Page focus: county weather
Forecast window: Jul 18 to Jul 24, 2026
Latest sync: Jul 18, 2026 10:09 AM MDT
Forecast office: GJT
Source: NOAA / NWS

Next High

65°F

Today

Next Low

40°F

Tonight

Rain Outlook

Periods mentioning precipitation

Windiest

0 to 5 mph

Tonight

Daily Outlook

Today

Jul 18

Showers And Thunderstorms

65 °F

/ 40°F

Wind 0 mph

Sun

Jul 19

Mostly Sunny then Showers And Thunderstorms Likely

68 °F

/ 41°F

Wind 0 to 5 mph

Mon

Jul 20

Mostly Sunny then Showers And Thunderstorms Likely

72 °F

/ 42°F

Wind 0 to 5 mph

Tue

Jul 21

Mostly Sunny then Showers And Thunderstorms Likely

71 °F

/ 42°F

Wind 5 mph

Wed

Jul 22

Showers And Thunderstorms

67 °F

/ 42°F

Wind 0 to 5 mph

Thu

Jul 23

Chance Showers And Thunderstorms then Showers And Thunderstorms Likely

68 °F

/ 42°F

Wind 0 to 5 mph

Fri

Jul 24

Showers And Thunderstorms Likely

69 °F

/ 42°F

Wind 0 to 5 mph

This Week in San Juan County

Monday looks like the warmest upcoming period in San Juan County at 72 degrees F.

Tonight is the coolest period ahead with temperatures near 40 degrees F.

The strongest winds are forecast for Tonight at about 0 to 5 mph NNE.

Precipitation is mentioned in 14 upcoming forecast periods.

Forecast Details

Last updated: Jul 18, 2026 10:09 AM MDT
Coverage: 8 days
Time zone: America/Denver
Forecast office: GJT
Radar station: KGJX

Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.

Open NOAA source

Extended Forecast

Tonight

Jul 18

40°F

Chance Showers And Thunderstorms then Partly Cloudy

0 to 5 mph NNE

A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 40. North northeast wind 0 to 5 mph. Chance of precipitation is 50%.

Sunday

Jul 19

68°F

Mostly Sunny then Showers And Thunderstorms Likely

0 to 5 mph N

Showers and thunderstorms likely after noon. Mostly sunny, with a high near 68. North wind 0 to 5 mph. Chance of precipitation is 60%.

Sunday Night

Jul 19

41°F

Slight Chance Rain Showers then Partly Cloudy

0 to 5 mph N

A slight chance of rain showers before midnight. Partly cloudy, with a low around 41. North wind 0 to 5 mph.

Monday

Jul 20

72°F

Mostly Sunny then Showers And Thunderstorms Likely

0 to 5 mph NNW

Showers and thunderstorms likely after noon. Mostly sunny, with a high near 72. North northwest wind 0 to 5 mph. Chance of precipitation is 60%.

Monday Night

Jul 20

42°F

Chance Showers And Thunderstorms then Partly Cloudy

0 to 5 mph N

A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and midnight. Partly cloudy, with a low around 42. Chance of precipitation is 30%.

Tuesday

Jul 21

71°F

Mostly Sunny then Showers And Thunderstorms Likely

5 mph SE

Showers and thunderstorms likely after noon. Mostly sunny, with a high near 71.

Tuesday Night

Jul 21

42°F

Showers And Thunderstorms

0 to 5 mph ESE

Showers and thunderstorms. Mostly cloudy, with a low around 42.

Wednesday

Jul 22

67°F

Showers And Thunderstorms

0 to 5 mph SSE

Showers and thunderstorms. Mostly cloudy, with a high near 67.

Wednesday Night

Jul 22

42°F

Showers And Thunderstorms Likely

0 to 5 mph NW

Showers and thunderstorms likely. Mostly cloudy, with a low around 42.

Thursday

Jul 23

68°F

Chance Showers And Thunderstorms then Showers And Thunderstorms Likely

0 to 5 mph WNW

A chance of showers and thunderstorms before noon, then showers and thunderstorms likely. Mostly cloudy, with a high near 68.

Thursday Night

Jul 23

42°F

Chance Showers And Thunderstorms

0 to 5 mph NW

A chance of showers and thunderstorms. Mostly cloudy, with a low around 42.

Friday

Jul 24

69°F

Showers And Thunderstorms Likely

0 to 5 mph WNW

Showers and thunderstorms likely. Partly sunny, with a high near 69.

Friday Night

Jul 24

42°F

Chance Showers And Thunderstorms then Mostly Cloudy

0 mph

A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 42.

Detailed Forecast

Period	Conditions	Temp	Wind	Details
Today Jul 18	Showers And Thunderstorms	65°F	0 mph	Showers and thunderstorms after 9am. Mostly cloudy, with a high near 65. Southeast wind around 0 mph. Chance of precipit...
Tonight Jul 18	Chance Showers And Thunderstorms then Partly Cloudy	40°F	0 to 5 mph NNE	A chance of showers and thunderstorms before midnight. Partly cloudy, with a low around 40. North northeast wind 0 to 5...
Sunday Jul 19	Mostly Sunny then Showers And Thunderstorms Likely	68°F	0 to 5 mph N	Showers and thunderstorms likely after noon. Mostly sunny, with a high near 68. North wind 0 to 5 mph. Chance of precipi...
Sunday Night Jul 19	Slight Chance Rain Showers then Partly Cloudy	41°F	0 to 5 mph N	A slight chance of rain showers before midnight. Partly cloudy, with a low around 41. North wind 0 to 5 mph.
Monday Jul 20	Mostly Sunny then Showers And Thunderstorms Likely	72°F	0 to 5 mph NNW	Showers and thunderstorms likely after noon. Mostly sunny, with a high near 72. North northwest wind 0 to 5 mph. Chance...
Monday Night Jul 20	Chance Showers And Thunderstorms then Partly Cloudy	42°F	0 to 5 mph N	A chance of showers and thunderstorms before 9pm, then a chance of showers and thunderstorms between 9pm and midnight. P...
Tuesday Jul 21	Mostly Sunny then Showers And Thunderstorms Likely	71°F	5 mph SE	Showers and thunderstorms likely after noon. Mostly sunny, with a high near 71.
Tuesday Night Jul 21	Showers And Thunderstorms	42°F	0 to 5 mph ESE	Showers and thunderstorms. Mostly cloudy, with a low around 42.
Wednesday Jul 22	Showers And Thunderstorms	67°F	0 to 5 mph SSE	Showers and thunderstorms. Mostly cloudy, with a high near 67.
Wednesday Night Jul 22	Showers And Thunderstorms Likely	42°F	0 to 5 mph NW	Showers and thunderstorms likely. Mostly cloudy, with a low around 42.
Thursday Jul 23	Chance Showers And Thunderstorms then Showers And Thunderstorms Likely	68°F	0 to 5 mph WNW	A chance of showers and thunderstorms before noon, then showers and thunderstorms likely. Mostly cloudy, with a high nea...
Thursday Night Jul 23	Chance Showers And Thunderstorms	42°F	0 to 5 mph NW	A chance of showers and thunderstorms. Mostly cloudy, with a low around 42.
Friday Jul 24	Showers And Thunderstorms Likely	69°F	0 to 5 mph WNW	Showers and thunderstorms likely. Partly sunny, with a high near 69.
Friday Night Jul 24	Chance Showers And Thunderstorms then Mostly Cloudy	42°F	0 mph	A chance of showers and thunderstorms before midnight. Mostly cloudy, with a low around 42.

Nearby Forecasts

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SAN JUAN COUNTY COURTHOUSE SILVERTON COLORADO image

Weather data provided by the National Weather Service (NOAA). Forecast pages update automatically as new periods are synced for each supported U.S. location.