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City guide · Idaho

Outdoor Project Weather in Boise, ID

This page runs Boise'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: 164 workable days a year.

Six tasks · one forecast · Idaho

SeptemberBest overall month
Lawn SeedingFriendliest task
691 task-daysWorkable task-days/yr
6Tasks tracked
Average of all six tasks

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.
Task	Today	Best months here	Full 10-day check
Deck Staining	—	Sep, Jun, May	Stain a Deck in Boise →
Exterior Painting	—	Sep, Jun, May	Paint Outside in Boise →
Driveway Sealing	—	Jun, Sep, Aug	Seal a Driveway in Boise →
Concrete Pouring	—	Sep, Jun, May	Pour Concrete in Boise →
Roof Coating	—	Sep, Jun, May	Coat a Roof in Boise →
Lawn Seeding	—	May, Oct, Apr	Seed a Lawn in Boise →

City-to-city context helps: browse outdoor project weather in Kailua, HI one stop back, or continue to Coeur d'Alene, ID’s project calendar.

Project weather, month by month

Workable days per month by task, from NOAA 1991–2020 normals for BOISE AIR TERMINAL, ID US. Darker = more workable days.
Task	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Deck Staining	0	0	0	9	23	25	4	12	26	16	0	0
Exterior Painting	0	0	0	9	23	25	4	12	26	16	0	0
Driveway Sealing	0	0	0	0	5	25	4	12	21	0	0	0
Concrete Pouring	0	0	0	9	23	25	4	12	26	16	0	0
Roof Coating	0	0	0	9	23	25	4	12	26	16	0	0
Lawn Seeding	0	0	16	30	31	25	0	0	28	31	3	0

Which task gets the most weather in Boise?

Lawn Seeding164days/yr
Deck Staining115days/yr
Exterior Painting115days/yr
Concrete Pouring115days/yr
Roof Coating115days/yr
Driveway Sealing67days/yr

Season edges differ by task — that's the point of checking six at once. In Boise the earliest opener starts around March and the last holdout closes after September. 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 — Boise's longest season at 164 workable days.

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Full 10-day checks

Idaho

Climatology: NOAA 1991–2020 normals via BOISE AIR TERMINAL, ID US (3.8 km from Boise center); live outlook by Open-Meteo.