National Weather Service United States Department of Commerce

A stalled frontal boundary and ample monsoonal moisture will lead to flash flood potential from the Great Basin to the Great Plains tonight and Tuesday

A stalled frontal boundary will set up along the southern and central Rockies for the next couple of days providing focus for showers and thunderstorms. In addition, ample monsoonal moisture will stream in across the southwest bringing enough moisture to introduce a flash flood threat from the Great Basin and Southwest eastward across the central and southern Rockies into the adjacent Plains.
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Hazardous Weather Conditions

Current Conditions

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Saint Augustine FL

7 Day Forecast

For More Weather Information:

Jacksonville, FL Local Forecast Office

Today

Scattered Thunderstorms Chance for Measurable Precipitation 40%

Scattered
Thunderstorms

High: 91 °F

Tonight

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 74 °F

Wednesday

Sunny

Sunny

High: 90 °F

Wednesday
Night

Partly Cloudy

Partly
Cloudy

Low: 75 °F

Thursday

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

High: 87 °F

Thursday
Night

Slight Chance Thunderstorms Chance for Measurable Precipitation 20%

Slight Chc
Thunderstorms

Low: 74 °F

Friday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 87 °F

Friday
Night

Chance Thunderstorms Chance for Measurable Precipitation 30%

Chance
Thunderstorms

Low: 74 °F

Saturday

Chance Thunderstorms Chance for Measurable Precipitation 40%

Chance
Thunderstorms

High: 88 °F

Detailed Forecast

  • Today Scattered showers and thunderstorms. Partly sunny, with a high near 91. Heat index values as high as 101. West wind 8 to 10 mph. Chance of precipitation is 40%.
  • Tonight A 30 percent chance of showers and thunderstorms, mainly before 9pm. Partly cloudy, with a low around 74. Southeast wind around 6 mph becoming calm in the evening.
  • Wednesday Sunny, with a high near 90. Light and variable wind becoming east 5 to 10 mph in the morning.
  • Wednesday Night Partly cloudy, with a low around 75. Southeast wind 6 to 10 mph.
  • Thursday A 20 percent chance of showers and thunderstorms. Mostly sunny, with a high near 87. Light southeast wind increasing to 9 to 14 mph in the morning.
  • Thursday Night A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 74. Chance of precipitation is 20%.
  • Friday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.
  • Friday Night A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
  • Saturday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
  • Saturday Night A 40 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
  • Sunday A 50 percent chance of showers and thunderstorms. Partly sunny, with a high near 88.
  • Sunday Night A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 74.
  • Monday A 40 percent chance of showers and thunderstorms. Partly sunny, with a high near 87.