Chicago Temperature Blanket 2025
Chicago’s 2025, drawn as a blanket: one row for every day, colored by the daily average temperature. The numbers below come from NOAA readings at Chicago Midway Airport.
January at the top, December at the bottom. 8 even bands, rainbow palette.
The year in Chicago
The warmest reading was a high of 96°F on June 24, and the coldest a low of -6°F on January 21. The average of the daily averages was 54°F. The low reached freezing or below on 99 days, and the high hit 90°F or more on 31 days.
With eight even bands, the color that covers the most days is yellow (43 to 54°F) at 66 days. The biggest one-day jump in the average was 21.5°F, on December 29. The station reported a high and a low on every day of the year.
Colors, days and yarn
Average temperature bands for Chicago 2025. Yarn is for a 50-inch single crochet blanket, one row a day, in worsted weight: about 4,567 yards in all.
| Color | Range °F | Days | Share | Yards | Skeins |
|---|---|---|---|---|---|
dark purple #5b2a86 | -2 to 9 | 5 | 1.4% | 63 | 1 |
blue #2f5bd3 | 9 to 20 | 18 | 4.9% | 225 | 2 |
aqua #2aa7d6 | 20 to 31 | 44 | 12.1% | 551 | 3 |
green #3aa655 | 31 to 43 | 45 | 12.3% | 563 | 3 |
yellow #f2d23c | 43 to 54 | 66 | 18.1% | 826 | 5 |
orange #f08a24 | 54 to 65 | 57 | 15.6% | 713 | 4 |
red #d6322b | 65 to 76 | 66 | 18.1% | 826 | 5 |
dark red #8f1b2c | 76 to 87 | 64 | 17.5% | 801 | 5 |
Skeins use 200 yards each, rounded up. Estimates only: swatch first.
Month by month
Average, lowest and highest daily average for each month, and the color that appears most.
| Month | Average °F | Lowest | Highest | Most common color |
|---|---|---|---|---|
| January | 24 | -2 | 40.5 | aqua |
| February | 29 | 7 | 47.5 | aqua |
| March | 46 | 28 | 65 | green |
| April | 52 | 35.5 | 70 | orange |
| May | 59 | 49.5 | 78.5 | orange |
| June | 75 | 56.5 | 87 | red |
| July | 79 | 69.5 | 85.5 | dark red |
| August | 75 | 64 | 86 | dark red |
| September | 71 | 58.5 | 80 | red |
| October | 59 | 44 | 78 | yellow |
| November | 43 | 26.5 | 60.5 | yellow |
| December | 28 | 5 | 44.5 | aqua |
Make your own Chicago blanket
This chart uses one setup. In the planner you can switch to highs or lows, balance the days, change the palette, set your gauge and choose another year. Chicago Midway Airport (USW00014819) is 15 km from the center of Chicago.
Everything on this page is free in the planner. The free planner covers any city and year, up to 8 color bands, the preview, counts and a daily table. The Planner Pack ($3.99, one-time) adds the printable chart, checklist and yarn list. See pricing.
Questions
How cold did Chicago get in 2025?
The lowest reading was -6°F on January 21 at Chicago Midway Airport, and the low was at or below freezing on 99 days.
How many colors does a Chicago temperature blanket need?
This chart uses 8 even bands from -2°F to 87°F. You can use fewer or more in the planner.
Which weather station is used for Chicago?
Chicago Midway Airport (USW00014819), 15 km from the center of the city. Data is from NOAA NCEI daily summaries.
Is the planner free?
Yes. Any US city and year, the on-screen preview, up to 8 color bands, the color and yarn counts, the daily table and a picture download (with a small “Made free” line) cost nothing. The Planner Pack ($3.99, one-time) adds the printable PDF chart, a daily checklist, a yarn shopping list and more.