WorkWindow

Outdoor Project Weather in Decatur, IL

One forecast, six label checks. Today's verdict for every task in Decatur loads above; the matrix below shows the whole year at a glance, computed from NOAA 1991–2020 normals at Decatur Wtp, Il Us. The friendliest calendar here belongs to lawn seeding (236 workable days a year).

Today at a glance

Verdicts load live from the 10-day forecast; without JavaScript this column stays blank and the year-round matrix below still answers the planning question.
TaskTodayBest months hereFull 10-day check
Deck Staining — Aug, Sep, Jul Stain a Deck in Decatur →
Exterior Painting — Aug, Sep, Jul Paint Outside in Decatur →
Driveway Sealing — Aug, Sep, Jul Seal a Driveway in Decatur →
Concrete Pouring — Aug, Sep, Jul Pour Concrete in Decatur →
Roof Coating — Aug, Sep, Jul Coat a Roof in Decatur →
Lawn Seeding — May, Jul, Aug Seed a Lawn in Decatur →

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for DECATUR WTP, IL US. Darker = more workable days.
TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deck Staining 0 0 0 15 18 19 22 23 22 22 0 0
Exterior Painting 0 0 0 15 18 19 22 23 22 22 0 0
Driveway Sealing 0 0 0 0 16 19 22 23 22 3 0 0
Concrete Pouring 0 0 0 15 18 19 22 23 22 22 0 0
Roof Coating 0 0 0 15 18 19 22 23 22 22 0 0
Lawn Seeding 0 0 9 30 31 30 31 31 30 31 13 0

The composite season in Decatur opens around March and closes after November: coatings wait on warm nights, concrete on freeze-free 48-hour stretches, seeding on the 55–80°F germination band. Between those bookends, the right question is which task fits this week — which is what the verdicts above answer.

Deepest calendar first: start with lawn seeding in Decatur (236 workable days a year), then work down the matrix.

Full 10-day checks

Illinois

Climatology: NOAA 1991–2020 normals via DECATUR WTP, IL US (3.3 km from Decatur center); live outlook by Open-Meteo.