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Lawn Seeding Weather in Utah: Best Months by City

Lawn Seeding season in Utah, city by city: peak months, season boundaries, and annual workable-day counts from NOAA 1991–2020 normals. Salt Lake City leads with 166 workable days a year; Logan runs the shortest at 115.

Utah is not one climate: Salt Lake City banks 166 workable lawn seeding days a year while Logan gets 115 — a spread the table below itemizes month by month. Season boundaries mark the first and last month averaging 8+ workable days against the label rules (50–85°F, nights 32°F+).

If one month anchors the Utah calendar it's May, the statewide leader in workable days. Use this page to pick the month, then the city page's 10-day strip to pick the days — and the national lawn seeding guide for the physics behind each rule.

Cities in Utah

Peak months and season boundaries from NOAA 1991–2020 normals; season = months with at least 8 workable days.
CityPeak monthsSeasonWorkable days/yr
Salt Lake City May, Oct, Apr March–June 166
Provo May, Oct, Apr March–June 139
Ogden May, Oct, Apr March–June 150
St. George Mar, Apr, Oct March–May 122
West Valley City May, Oct, Apr March–June 166
Logan May, Jun, Sep April–June 115
West Jordan May, Oct, Apr March–June 166
Orem May, Oct, Apr March–June 139
Sandy May, Oct, Apr March–June 166
Lehi May, Sep, Jun April–June 118
Layton May, Oct, Sep April–June 148
South Jordan May, Oct, Apr March–June 166

The rules behind these numbers

Typical label thresholds for lawn seeding — the single ruleset used by every check on this page.
CheckThresholdWhy it matters
Air temperature 50–85°F (low-temp formulas from 55°F) Cool-season grasses germinate best with daytime highs of roughly 60–80°F.
Overnight low ≥32°F during the first 48 h (≥40°F preferred) Seed survives a light frost, but sustained cold stalls germination.
Dry before no soaking (≥1.0") in the prior 24 h Seeding into mud makes ruts and washes seed into low spots.
Dry after <0.5" rain for 24 h after Light rain after seeding helps. A 0.5"+ downpour washes seed out.
Wind ≤15 mph (broadcast seed drifts up to 25 mph) Broadcast spreading above 15 mph lands seed everywhere but the lawn.

Always follow your product label — formulas vary. The table above is the typical range across major manufacturers, not a promise about your can.

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