Fish Lake & Fishlake National Forest, UT

Today’s Forecast:

Today’s Report:

About Fish Lake & Fishlake National Forest

Weather shapes every part of a visit to Fish Lake & Fishlake National Forest, from the first access check to the final exposed mile. Conditions may differ between Richfield and Fish Lake Scenic Byway, so use the forecast for the exact part of the destination you plan to visit.

Planning an Outing at Fish Lake & Fishlake National Forest

Check the specific trailhead, road, launch, campground, lift, or facility before departure, then keep a shorter alternative available. For this page, the main planning focus is boating, paddling, fishing; verify the approach toward Loa rather than assuming the entire region is operating normally.

Weather Tips for Fish Lake & Fishlake National Forest

• Check water temperature, wind, waves, launch or marina status, and current water level before committing to open water.
• Afternoon gusts and thunderstorms can erase a calm small-craft window quickly; an early launch usually preserves more options.
• Treat cold water, algae or water-quality notices, seasonal ice, and remote shoreline access as separate checks from the air forecast.
• At Fish Lake & Fishlake National Forest, verify the specific ramp, marina, shoreline, river reach, or ice condition needed for the selected activity.

Nearby Towns and Areas

Use this forecast as practical context for outdoor plans near:

• Richfield
• Loa
• Koosharem
• Johnson Valley Reservoir
• Mytoge Mountain
• Sevenmile area
• Fish Lake Scenic Byway

Adjust the Day to the Forecast

Keep the objective flexible and choose the version of the day that preserves a comfortable margin for access, weather, and daylight.

7-Day Forecast for Fish Lake & Fishlake National Forest

Fish Lake & Fishlake National Forest Weather by Season

Winter

Snow, ice, wind, and road controls can restrict access for days at a time. Winter activities should follow current resort, trail, avalanche-control, and transportation notices. Around Loa, confirm local roads and facilities before committing to the day.

Spring

Warm valleys can coexist with deep snow, mud, high streams, and closed upper roads. Expect a long transition before summer trail conditions arrive. Around Koosharem, confirm local roads and facilities before committing to the day.

Summer

The broadest access usually comes in summer, but alpine lightning, cold lakes, mosquitoes, smoke, and sudden wind reward early starts. Around Johnson Valley Reservoir, confirm local roads and facilities before committing to the day.

Fall

Clear air and cool trails often arrive in fall, followed quickly by hard freezes, shorter daylight, and the first lasting snow. Around Mytoge Mountain, confirm local roads and facilities before committing to the day.

Key Climate Data Points

• Annual average temperature: roughly 38–48°F at high elevations; local elevation and aspect create substantial variation.
• Annual snowfall: substantial at elevation, varying sharply with slope and exposure.
• Warmest months: July is generally warmest, moderated strongly by elevation.
• Coolest months: December and January are usually coolest.
• Wettest season: Winter and early spring bring much of the mountain precipitation, while southern and eastern Utah also receive summer monsoon moisture.
• Driest season: Late spring into early summer is commonly driest before monsoon influence develops.
• Best outdoor window: Late spring through early fall when high roads are open, adjusted for storms and smoke.