What's the best month to run in Salt Lake City?

October. Typical daytime Run Scores average 89 (Great), the best of the year, with temperatures around 55°F (13°C).

When is it too hot to run in Salt Lake City?

July is the toughest month: typical temperatures near 83°F (28°C) with comfortable dew points around 37°F. On days like that, run in the 6–7 AM window and ease off the pace.

What time of day is best for running in Salt Lake City?

In the warm months the kindest window is typically early morning. Across the year the highest-scoring hours cluster early; the month-by-month table above lists the best window for each month.

When is the best time to run in Salt Lake City?

It depends on the day. High-desert altitude and dry heat. Thin air and intense sun by day; winter inversions trap cold, hazy air in the valley. Run the calculator above and it returns today's highest-scoring window for Salt Lake City: usually early morning or evening when heat and dew point are lowest. Tap any hour to see the full breakdown.

What is a good Run Score?

Scores run 0–100. 80–100 is Great (97+ earns a gold star for near-perfect conditions). 65–79 (Good) is solid. 55–64 (Fair) or 45–54 (Tough) means at least one factor (usually heat or dew point) is slowing you. Below 45 (Poor), expect a noticeably harder effort or hold back for safety.

Why does dew point matter more than temperature?

Your body cools by evaporating sweat. When the dew point climbs above roughly 60°F, the air is too saturated for sweat to evaporate efficiently, so heat builds up even if the thermometer looks reasonable. That's why a 70°F muggy morning can feel harder than a dry 80°F afternoon.

How is this different from a normal weather app?

A weather app tells you the conditions. This calculator translates them into a running decision: a single score, the best hour to head out, and a concrete pace adjustment in seconds per mile, all from the same scoring engine that powers the RunWeather app.

Is the running weather calculator free?

Yes. The calculator is completely free to use, with no account required. The RunWeather app adds Strava sync, multi-day planning, and personalized scoring on top of the same model.

When should I run in Salt Lake City today?

High-desert altitude and dry heat. Thin air and intense sun by day; winter inversions trap cold, hazy air in the valley. Live Run Score for Salt Lake City, every hour today, from the same engine as the RunWeather app.

QR code that opens RunWeather in your phone's app store

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The app

One check a day, done for you

When to go
Every hour gets a Run Score. On this Austin day the best was 7 am at 94.
Why it feels hard
Tap any hour: what's against you and how much slower the same effort runs.
On your home screen
Widgets and a morning alert, no app to open.

RunWeather Today in Austin at 7 am: Run Score 94, great day to run

7 am · score 94

Why this score: 57 out of 100, 6.8% slower for the same effort, temperature is the biggest drag

3 pm · 6.8% slower

Typical running conditions in Salt Lake City

Across a typical year, the best running weather in Salt Lake City lands in October, when daytime Run Scores average 89 (Great). The hardest stretch is July, with temperatures around 83°F (28°C) and comfortable dew points near 37°F. The stickiest month is August (dew point 46°F). Year-round, Salt Lake City averages a 74 Run Score. Everything below is the typical pattern by month and by hour of day, scored with the same engine as the live calculator above, so you can plan the season and the time of day, not just today.

Best time to run in Salt Lake City, by season

When the kindest window falls shifts with the season. Typical Run Score and the best time of day for each.

Winter

Best midday

Winter in Salt Lake City averages a 69 Run Score (Good); the kindest window is typically midday, with temperatures around 0°C and comfortable dew points.

Spring

Best night

Spring in Salt Lake City averages a 84 Run Score (Great); the kindest window is typically night, with temperatures around 9°C and comfortable dew points.

Summer

Best early morning

Summer in Salt Lake City averages a 62 Run Score (Mixed); the kindest window is typically early morning, with temperatures around 25°C and comfortable dew points.

Autumn

Best mid-morning

Autumn in Salt Lake City averages a 79 Run Score (Good); the kindest window is typically mid-morning, with temperatures around 12°C and comfortable dew points.

Salt Lake City running weather, month by month

Typical temperature, dew point, and Run Score for each month, plus the best window of the day. Based on 2022–2024 history.

Month	Avg temp	Dew point	Typical Run Score	Best window
January	30°F (Cold)	21°F (Comfortable)	68 Good	10 AM–8 PM
February	31°F (Cold)	18°F (Comfortable)	70 Good	11 AM–5 PM
March	38°F (Cold)	23°F (Comfortable)	80 Great	12–6 PM
April	47°F (Cool)	27°F (Comfortable)	88 Great	6–9 PM
May	58°F (Ideal)	33°F (Comfortable)	85 Great	9–11 PM
June	71°F (Warm)	37°F (Comfortable)	67 Good	6–7 AM
July	83°F (Hot)	37°F (Comfortable)	57 Fair	6–7 AM
August	77°F (Warm)	46°F (Comfortable)	62 Fair	6–8 AM
September	69°F (Warm)	37°F (Comfortable)	71 Good	6–8 AM
October	55°F (Ideal)	32°F (Comfortable)	89 Great	9–10 AM
November	37°F (Cold)	23°F (Comfortable)	77 Good	11 AM–4 PM
December	31°F (Cold)	23°F (Comfortable)	69 Good	11 AM–4 PM

Climate data by Open-Meteo.com, from Copernicus ERA5 reanalysis, hourly 2022–2024 (CC BY 4.0). RunWeather computed the Run Scores, best windows and monthly averages from it.

Dew point is the real story in Salt Lake City

Dew point (not the thermometer) decides how hard a run feels. The muggiest month in Salt Lake City is August, when the typical dew point reaches 46°F (8°C) (comfortable). At that point sweat stops evaporating efficiently, so even a moderate temperature feels brutal. Compare that with October, the easiest month, when dew points sit near 32°F and the same effort feels far lighter. The hour-by-hour scores above already fold this in.

Running in Salt Lake City, month by month

Typical conditions and the best time to run for each month of the year.

Salt Lake City in January68 Salt Lake City in February70 Salt Lake City in March80 Salt Lake City in April88 Salt Lake City in May85 Salt Lake City in June67 Salt Lake City in July57 Salt Lake City in August62 Salt Lake City in September71 Salt Lake City in October89 Salt Lake City in November77 Salt Lake City in December69

By city

Best time to run, by city

What the calculator scores
Eight signals, weighted by how much each changes a run
Temperature. Performance peaks near 50–54°F. Every degree above that works your cooling system harder and slows the pace you can hold at the same effort.
Dew point. The real humidity signal. Above ~60°F dew point, sweat stops evaporating efficiently: the single biggest hidden driver of a hard summer run.
Wind. Sustained wind and gusts feed drag and thermal estimates. This public calculator uses a default route-exposure assumption because it does not know your running direction.
Heat stress. How hard heat, humidity, sun, and wind hit your body, combined into one number (wet-bulb globe temperature), the same metric race directors use to flag risk.
Solar exposure. Direct radiation on a shadeless route can feel far hotter than the air temperature. Cloud cover and sun angle are factored in.
Precipitation. Rain probability and intensity affect footing, comfort, and gear, weighted by how likely it is during your window.
Air quality. US AQI is folded in so sensitive runners get a clear signal when particulates make hard efforts a bad idea.
Pace adjustment. The output you actually use: how many seconds per mile to ease off today so your effort (not the clock) stays honest.
Enter your city. Search any city worldwide. RunWeather pulls the live local forecast: temperature, dew point, wind, sun, and air quality.
Get a 0–100 Run Score. One number that blends performance, safety, and experience (labeled Great, Good, Fair, Tough, or Poor) for the current hour.
Scrub the next 12 hours. Tap any hour to rebuild the full breakdown for that start time, or jump straight to the best window today.
Need a pace target for the heat instead? Try the heat and humidity pace calculator.
Running guides
Heat, humidity, wind, cold
Questions runners ask
8 questions
What's the best month to run in Salt Lake City?
October. Typical daytime Run Scores average 89 (Great), the best of the year, with temperatures around 55°F (13°C).
When is it too hot to run in Salt Lake City?
July is the toughest month: typical temperatures near 83°F (28°C) with comfortable dew points around 37°F. On days like that, run in the 6–7 AM window and ease off the pace.
What time of day is best for running in Salt Lake City?
In the warm months the kindest window is typically early morning. Across the year the highest-scoring hours cluster early; the month-by-month table above lists the best window for each month.
When is the best time to run in Salt Lake City?
It depends on the day. High-desert altitude and dry heat. Thin air and intense sun by day; winter inversions trap cold, hazy air in the valley. Run the calculator above and it returns today's highest-scoring window for Salt Lake City: usually early morning or evening when heat and dew point are lowest. Tap any hour to see the full breakdown.
What is a good Run Score?
Scores run 0–100. 80–100 is Great (97+ earns a gold star for near-perfect conditions). 65–79 (Good) is solid. 55–64 (Fair) or 45–54 (Tough) means at least one factor (usually heat or dew point) is slowing you. Below 45 (Poor), expect a noticeably harder effort or hold back for safety.
Why does dew point matter more than temperature?
Your body cools by evaporating sweat. When the dew point climbs above roughly 60°F, the air is too saturated for sweat to evaporate efficiently, so heat builds up even if the thermometer looks reasonable. That's why a 70°F muggy morning can feel harder than a dry 80°F afternoon.
How is this different from a normal weather app?
A weather app tells you the conditions. This calculator translates them into a running decision: a single score, the best hour to head out, and a concrete pace adjustment in seconds per mile, all from the same scoring engine that powers the RunWeather app.
Is the running weather calculator free?
Yes. The calculator is completely free to use, with no account required. The RunWeather app adds Strava sync, multi-day planning, and personalized scoring on top of the same model.
From the blog
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