Grand Teton Forecast Tuesday – Wednesday July 27-28

  • Short-term forecast, emphasizing weather parameters most important to visitors in the Jenny Lake / String Lake / Leigh Lake region
  • Animations of expected weather radar updated daily.
    • Other weather parameters (snow, wind, etc.) added when they may be significant.
    • For orientation, animation maps show Wyoming and a small portion of the surrounding states.
  • Temperature graphic is for the Airport. Subtract a couple of degrees for String Lake and 3-5 degrees if a visitor asks about Colter Bay.
  • The wind gusts forecasts are usually (in the summer) a reasonable forecast for average sustained wind speeds at 9,000 – 11,000 feet for backcountry hikers.
  • For those with access to Grand Teton Park Radios: Channel 16 is NOAA Weather Radio
  • Click here for access to the NOAA smoke-forecasting site.
  • Click here for an animation of smoke concentration over the northwest U.S. for the next two days.

Tuesday will be the last hot day (for a while).

Tuesday: Mostly sunny and hot, with a chance of late afternoon or evening showers and thunderstorms. Highs around 90 deg. Light winds expect for gusts up to 30 mph in the vicinity of thunderstorms.

Wednesday: Sunny mornings with scattered afternoon showers and thunderstorms. Not as hot with highs in the mid-80’s.

Smoke forecast: Significant fires continue to burn in Washington, Oregon, Idaho and northern California. Smoke concentrations on Tuesday will not be as heavy we saw on Monday. On Wednesday, we will see a significant reduction in smoke, and only a light haze in the sky.

Extended Outlook:

Thursday – Friday: Sunny mornings with a good chance for afternoon showers and thunderstorms. Cooler with highs in the low 80’s.

Saturday – Monday: Continued afternoon showers and thunderstorms. Cooler still with highs in the mid 70’s.

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