WorkWindow

Outdoor Project Weather in Tempe, AZ

This page runs Tempe's forecast against all six task rulesets at once. Verdicts load live above; the month-by-month matrix below — built from NOAA 1991–2020 normals — shows when each job's season opens. Lawn Seeding gets the most calendar here: 156 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 — Nov, Mar, Apr Stain a Deck in Tempe →
Exterior Painting — Nov, Mar, Apr Paint Outside in Tempe →
Driveway Sealing — Apr, Oct, Nov Seal a Driveway in Tempe →
Concrete Pouring — Nov, Mar, Apr Pour Concrete in Tempe →
Roof Coating — Nov, Mar, Apr Coat a Roof in Tempe →
Lawn Seeding — Jan, Mar, Dec Seed a Lawn in Tempe →

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for TEMPE ASU, AZ US. Darker = more workable days.
TaskJanFebMarAprMayJunJulAugSepOctNovDec
Deck Staining 0 18 28 28 0 0 0 0 0 12 28 0
Exterior Painting 0 18 28 28 0 0 0 0 0 12 28 0
Driveway Sealing 0 0 0 16 0 0 0 0 0 12 1 0
Concrete Pouring 0 18 28 28 0 0 0 0 0 12 28 0
Roof Coating 0 18 28 28 0 0 0 0 0 12 28 0
Lawn Seeding 31 29 31 5 0 0 0 0 0 0 29 31

Season edges differ by task — that's the point of checking six at once. In Tempe the earliest opener starts around February and the last holdout closes after April. A week that fails the paint rules on humidity can still pass seeding, and a frost that ends concrete season leaves sealing untouched until nights slip under 50°F.

If you only open one full check, make it lawn seeding — Tempe's longest season at 156 workable days.

Full 10-day checks

Arizona

Climatology: NOAA 1991–2020 normals via TEMPE ASU, AZ US (4.3 km from Tempe center); live outlook by Open-Meteo.