About Climate Norms

Climate Norms shows, one city per page, what the weather is like each month: average high, low and rainfall, read from NOAA's climate normals.

Search for "las vegas weather in march" and you usually get a day-by-day forecast (only useful for the next couple of weeks) or a scattered set of blog and travel-agency guesses. We put the actual thirty-year average for every month on one page, name the weather station it came from, and link the query so anyone can check it.

Where the numbers come from

• Monthly temperature and rainfall figures are NOAA's current 30-year climate normals (1991–2020); we pull them through ACIS, a query tool the Regional Climate Centers operate for NOAA.
• Quoted sentences about a city's climate come from that city's National Weather Service forecast office, word for word, with a link and the date we read them.
• We do not offer relative humidity yet; the method page explains why.

Nobody at NOAA or the Weather Service runs, reviews or backs this site; it is put together independently. There are no ads, no sign-ups, and no photo galleries to scroll through.

Found a number that looks wrong?

Send hello@climatenorms.com a link to the page plus whatever NOAA currently shows there. Once NOAA rolls out a new 30-year normal period, the figures here get updated or pulled — the date stamp always moves with the data, never on its own. How your message itself is handled is covered on the privacy page.