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TheForecast Post

A chronicle of American weather and climate  ·  Wednesday, 16 September 2026

Weather Trader Notebook MILEPOST 570

April 8, 2025 Tuesday Weather Update

Quiet period ahead

What the month did

April 2025 was the 16th-warmest April in the 132-year national record (1895–2026), at 53.6°F against a 1991–2020 normal of 51.8°F (+1.7°F).

April 2025 was the 31st-wettest April in the 132-year national record (1895–2026), at 2.9in against a 1991–2020 normal of 2.7in (+0.2in).

NOAA/NCEI Climate at a Glance, contiguous United States. This is the observed record for the month, not a score of anything said in this piece — the forecast ledger begins 2026-08-17 and cannot reach earlier posts.

With a quiet period of weather coming up — well deserved — I can take some time to dig into the weeds with some analytics.

Weather models are scored on the skill with various metrics including root mean squared error (RMSE) and anomaly correlation, which is a pattern matching taking into account climatology.

For subscribers

The rest of this piece is for paid subscribers of Weather Trader. The Post keeps the archive, the index and the record; the writing itself stays behind the same subscription it was published under.

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Milepost
570 · laid 2025-04-08T14:06:48.371000Z
Source
https://weather.substack.com/p/april-8-2025-tuesday-weather-update
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