There's a React web app to visualzie this data: https://fasiha.github.io/hareonna/

It produces pretty graphs like this, comparing San Francisco, New York City, Macau, Singapore, and Flores in the Azores:

and maps like this:

Here's my introductory blog post.

Install Node and Git. Run

git clone https://github.com/fasiha/hareonna.git
cd hareonna
npm i

Download into this hareonna directory the following files:

• https://www.ncei.noaa.gov/pub/data/ghcn/daily/ghcnd-stations.txt (10 MB)
• https://www.ncei.noaa.gov/pub/data/ghcn/daily/ghcnd-inventory.txt (33 MB)
• https://www.ncei.noaa.gov/data/global-historical-climatology-network-daily/archive/daily-summaries-latest.tar.gz (7.1 GB as if 2022 June)

Run:

node jsonify_stations.js
node filter_stations.js
node closest_station.js

This outputs a small <10 MB file, good-stations-summary.json, with a number of percentiles for temperature highs/lows for all "good" weather stations that have had temperature data for the last three years (though some stations may have (considerable) missing temperature data within the three year period).

Finally, you need a bunch of Python to render some maps (coming soon to JavaScript/browser):

# requires numpy, matplotlib, basemap, basemap-data-hires (conda-forge package)
python plots.py

This generates a list of most similar weather stations: closest.md and some plots.

I use GitHub Pages to serve the contents of the gh-pages branch as a static site on https://fasiha.github.io/hareonna/.

To set it up, I use Kris Jenkins' tip to check out the gh-pages branch as a Git worktree. Starting in a checkout of this repo:

git worktree add ../hareonna-dist gh-pages

Then every time I want to rebuild the site, I run the following script:

rmtrash ../hareonna-dist/*
git rev-parse HEAD > ../hareonna-dist/source-sha.txt
npm run build-static && cp -pr out/* ../hareonna-dist && cd ../hareonna-dist && git add . && git commit -am dist --amend && git push -f && cd -

(rmtrash is my alias for a safe rm, feel free to replace this with rm -fr.)

All: https://www.ncei.noaa.gov/data/global-historical-climatology-network-daily/access/

• Tehachapi: USC00048829
• SFO: USW00023234

https://www.ncei.noaa.gov/data/global-historical-climatology-network-daily/access/USC00048829.csv

https://nominatim.org/release-docs/develop/api/Search/

• https://nominatim.openstreetmap.org/search?q=tehachapi&format=json