# Climate reports (NOAA style)

URL: https://pro-weather.com/docs/features/climate-reports

> Monthly and annual climatological summaries built from your own archive, on screen and as a plain-text download.

The **Reports** tab prints the climatological summary that every serious
weather-station install produces: a month as one row per day, a year as one row
per month, in the same layout weewx and CumulusMX have generated for decades.
It is built entirely from readings your own station recorded.

## Where it appears

Reports show up as a **Reports** tab on your public site once your archive holds
about **a week of complete days**. Turn the tab on or off under
**Settings → Weather features → Climate reports**.

Like the almanac, reports are part of the **Pro plan** and your free trial.

## The monthly summary

One row per day, with a totals row underneath:

| Column | What it is |
| --- | --- |
| Mean temp | The average of every reading that day, not the midpoint of high and low |
| High / Low | The day's extremes, each with the **time** it happened |
| Heat / cool degree days | How far the day's mean sat below or above the base temperature |
| Rain | The day's total |
| Avg wind | The average of every wind reading |
| Max gust | The strongest gust, with the time |
| Dominant direction | The speed-weighted average bearing the wind came from |

Under the table you get the day counts a climate summary always carries: how
many days the maximum reached 30 °C (90 °F), how many stayed at or below
freezing, how many nights fell to freezing or to -20 °C (0 °F), and how many
days of rain cleared each of three thresholds.

## The annual summary

Pick a year instead of a month and you get three tables:

- **Temperature** - per month: average high, average low, mean, degree days,
  the year's extremes with their dates, and the four day counts.
- **Precipitation** - per month: total, the wettest single day and its date,
  and the days-of-rain counts.
- **Wind** - per month: average speed, strongest gust with its date, and the
  dominant direction.

Each table ends with a row for the whole year, and that row is by construction
the sum of the months printed above it.

## Degree days

Heating and cooling degree days are calculated from **each day's mean
temperature** against a base of **18.3 °C / 65 °F** - the convention national
climate summaries use, and the default in both weewx and CumulusMX. The base
and the method are printed on the report so a number is never ambiguous.

> **Not the same as growing degree days**
>
  The Garden & agriculture tab has its own growing degree days on a different
  base, aimed at crops rather than buildings. The two are unrelated.

## The text download

Every report has a **Download as text** link that produces the classic
fixed-width file, named `NOAA-2026-08.txt` for a month and `NOAA-2026.txt` for a
year - the same names weewx and CumulusMX use, so a downloaded report drops
straight into an archive you already keep.

The text file is deliberately **not translated**: its column positions *are* the
format, and it is the version people mail to a club, diff year over year and
feed to other tools. The tables on your site are the translated, readable
version of the same numbers.

Both files follow your site's unit system, so a metric site gets °C, mm and
km/h and an imperial one gets °F, inches and mph.

## What your hardware affects

Every figure comes from readings already in your archive, so nothing new needs
collecting. Two columns depend on where your archive comes from:

- **Dominant wind direction** needs a bearing stored with each reading. Stations
  on a **WeatherLink Pro/Pro+** plan have always had this. Stations on
  **WeatherLink Basic**, or hardware that pushes to Pro Weather directly, began
  storing it in August 2026, so those sites show a direction from that point
  forward and a dash before it.
- **Times of the daily extremes** are exact on a WeatherLink Pro/Pro+ archive
  (the console records the minute). On other archives the time shown is the
  reading that set the extreme, so it is accurate to your refresh interval.

A day marked with an asterisk had too few readings to cover the whole day - a
gap in collection, or the first day you connected. It is still printed, but its
high and low are the extremes of what was actually measured.

## Corrections carry through

If you fix or remove a reading in the [Data editor](https://pro-weather.com/docs/data-editor), the
affected month's report updates with it. Removed readings never count toward a
day's coverage or its extremes.

## Next steps

- [History, records & the almanac](https://pro-weather.com/docs/features/almanac-history)
- [Data editor](https://pro-weather.com/docs/data-editor)
- [Sensor calibration](https://pro-weather.com/docs/calibration)
- [Tabs & panels](https://pro-weather.com/docs/customizing/panels)