WorkWindow

Outdoor Project Weather in Alton, IL

One forecast, six label checks. Today's verdict for every task in Alton loads above; the matrix below shows the whole year at a glance, computed from NOAA 1991–2020 normals at Alton - Melvin Price L&D, Il Us. The friendliest calendar here belongs to lawn seeding (179 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, Jul, Sep Stain a Deck in Alton →
Exterior Painting — Aug, Jul, Sep Paint Outside in Alton →
Driveway Sealing — Aug, Jul, Sep Seal a Driveway in Alton →
Concrete Pouring — Aug, Jul, Sep Pour Concrete in Alton →
Roof Coating — Aug, Jul, Sep Coat a Roof in Alton →
Lawn Seeding — May, Oct, Apr Seed a Lawn in Alton →

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for ALTON - MELVIN PRICE L&D, IL US. Darker = more workable days.
TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deck Staining 0 0 0 20 20 21 24 24 23 23 4 0
Exterior Painting 0 0 0 20 20 21 24 24 23 23 4 0
Driveway Sealing 0 0 0 1 20 21 24 24 23 8 0 0
Concrete Pouring 0 0 0 20 20 21 24 24 23 23 4 0
Roof Coating 0 0 0 20 20 21 24 24 23 23 4 0
Lawn Seeding 0 0 15 30 31 19 0 4 30 31 19 0

The composite season in Alton opens around March and closes after October: 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 Alton (179 workable days a year), then work down the matrix.

Full 10-day checks

Illinois

Climatology: NOAA 1991–2020 normals via ALTON - MELVIN PRICE L&D, IL US (4.1 km from Alton center); live outlook by Open-Meteo.