Daily Thermometers

About Daily Thermometers

A Thermometers grid is packed with thermometer shapes of different lengths, each with a round bulb at one end. You fill some of them with mercury. Filling always starts at the bulb and runs toward the other end without skipping a cell, though a thermometer can be left partly or completely empty. The numbers along the top and side say how many filled cells each column and row must contain.

Puzzle-thermometers.com offers grids from 4x4 to 15x15 in two versions, standard and curved, with daily, weekly and monthly specials for each. This page is the standard Special Daily Thermometers: one dated grid for all players, 20 by 20 on 2 October 2026. There is also a Special Daily Curved Thermometers on the same site if you want a second daily. The site shows ads, which patrons can remove along with gaining access to the last 30 daily puzzles.

The one-way filling rule makes Thermometers easier to pick up than it looks, and the counts give it the same row-against-column back and forth as a nonogram. It suits players who like steady progress and few dead ends.

How to play Daily Thermometers

1. Open puzzle-thermometers.com and choose Special Daily Thermometers.
2. Find the bulb end of each thermometer: mercury always starts there.
3. Fill cells from the bulb outward with no gaps; a thermometer may be empty, partly filled or full.
4. Match the clues: each row and column must contain exactly as many filled cells as the number beside it.
5. When every count is met, press Done (or Enter) to check the grid.

Tips

• If a cell near the top of a thermometer must be filled, every cell between it and the bulb is filled too.
• If a cell must stay empty, every cell beyond it toward the far end is empty as well.
• Lines with a clue of 0 or a clue equal to their length are settled at once and give you starting points across the grid.
• Compare a row's clue with the thermometers that cross it: a long thermometer running along the row can only be filled so far before it overshoots.

Questions