How the grades work
Every grade is relative to this place's own climate history, not an absolute temperature. For each day Thermograph builds a ±7-day seasonal distribution from decades of local records, then reports the percentile where the day falls in it.
So a 60° day can be “Above Normal” in one place or season and “Below Normal” in another. That's why the categories read “Above/Below Normal”, “High/Low”, and “Near Record” — never “hot” or “cold”.
Grade scale — percentile of the local ±7-day history
Rain intensity — percentile among rain days
Precipitation is graded only across days that actually saw rain, so “Heavy” means heavy for a rainy day here. Dry days are colored by their dry streak instead (below).
The metrics
- High / Low
- The day's highest and lowest air temperature (°F).
- Feels
- Apparent temperature — what the air actually felt like once humidity and wind are factored in. Every day has a felt high (heat-index territory) and a felt low (wind-chill territory); both are shown in the day tooltip, each graded against its own history. The Feels color uses whichever side sits further from your comfort temperature — set with the slider on the Calendar page (0–100°F, default 65°F) — so sweltering days grade by their felt high and bitter days by their felt low.
- Humid
- Absolute humidity: grams of water vapor per cubic meter of air (g/m³).
- Wind
- Average sustained wind speed (mph).
- Gust
- Peak wind gust for the day (mph).
- Precip
- Total precipitation (inches), graded by intensity among rain days.
- Dry streak
- Consecutive days since the last measurable rain — the color deepens the longer it's been dry, and resets to blue on a rain day.