Tennis & Pickleball Concept Guide

How to Read a Tennis Weather Forecast

General weather apps are built for commuters and event planners, not tennis players. The four numbers that actually determine whether courts are playable are: temperature at play time, wind speed and gusts at play time, and cumulative overnight rainfall — none of which appear prominently on most weather apps.

The Four Numbers That Matter

Temperature at your play time (not the daily high or low), wind speed at your play time (not the daily peak), wind gust value (often significantly higher than sustained speed), and cumulative rainfall in the 12 hours before play. Find a forecast source that shows hourly data — daily summaries are nearly useless for precise tennis decisions.

Why Daily Forecasts Mislead Tennis Players

'Sunny with a high of 85°F' doesn't tell you the 7 AM temperature was 68°F with 4 mph wind. '40% chance of rain' doesn't tell you whether 0.20 inches fell overnight or 0.02 inches. Daily forecast summaries obscure the specific conditions that determine court quality. Always look at hourly data when a court decision is at stake.

Understanding Dew Point

Dew point is more useful than humidity percentage for predicting early-morning court conditions. A dew point above 60°F means the air holds enough moisture that overnight condensation on courts is likely — even on technically dry nights. In humid climates like the Southeast and Gulf Coast, dew points above 70°F in summer are common and mean slick courts even before sunrise.

The Day-Before vs. Morning-Of Check

Check conditions the night before to plan your day; check again 30 minutes before you leave. Forecast accuracy improves significantly within 12 hours, and overnight storm systems can change the entire picture between 9 PM and 6 AM. The two-check habit eliminates most last-minute surprises.

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How Playable handles this

Playable automates all of this — it pulls hourly Open-Meteo forecast data for your court's GPS coordinates, evaluates the 7–9 AM window against specific thresholds, and gives you a simple verdict. It's the forecast translation layer built specifically for tennis and pickleball players.

Frequently Asked Questions

What's the most important number in a tennis weather forecast? +
Cumulative rainfall in the prior 12 hours, because it determines court condition — the one variable you can't adapt to once you're there. Wind and temperature affect how you play; rain determines whether you play at all.
Which weather apps show hourly data? +
Weather.gov, Weather Underground, and Windy.com all provide hourly breakdowns. Playable automates this — it pulls hourly forecast data for your specific court location and evaluates the 7–9 AM window directly, so you don't need to interpret raw hourly data yourself.
How accurate is a 7-day tennis forecast? +
Reasonably accurate for temperature trends within about 3–4°F at 7 days. Wind and precipitation forecasts degrade meaningfully beyond 3–4 days. Use 7-day forecasts for planning flexibility; rely on 24–48 hour forecasts for actual go/no-go decisions.
Why do different weather apps show different wind speeds? +
Different apps use different meteorological models and different station data. Wind speeds can vary by 2–4 mph between apps for the same location. When wind is near a threshold (6–8 mph), checking two sources is worth the extra 30 seconds.

Check your courts before you head out

Playable gives you a 7-day playability forecast for your specific court. Free, no account needed.

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