What planting zone is Moreno Valley, CA?

Moreno Valley is in USDA plant hardiness zone 9b (average annual extreme minimum temperature 25 to 30°F), from the 2023 USDA Plant Hardiness Zone Map.

What is the weather like in Moreno Valley?

In Moreno Valley, CA the warmest month is August (avg high 94.9°F) and the coldest is December (avg low 37.1°F). It averages about 10.7″ of precipitation a year.

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Moreno Valley, CA Planting Calendar & Frost Dates

USDA hardiness zone 9b · ZIP 92553 · elevation 462′ · NOAA & USDA data

Moreno Valley sits in USDA zone 9b and is effectively frost-free — you can grow something outdoors year-round. The warmest month is August (avg high 94.9°F) and the coolest is December (avg low 37.1°F). Time plantings by the hot vs. cool season rather than by frost: grow heat-loving crops through the warm months and cool-season greens in the mild winter. The wettest month is February (2.4″).

Hardiness zone

min temp 25 to 30°F

Frost

Frost-free

grow year-round

Warmest month

August

avg high 94.9°F

Month-by-month typical weather in Moreno Valley

Average conditions from the NOAA/NCEI 1991–2020 U.S. Climate Normals at March Afb, CA (1.6 mi away). Temperatures °F, precipitation & snow in inches.

Month	Avg high	Avg low	Mean	Precip (in)	Snow (in)
January	65.8	37.4	51.6	2.1	–
February	66.3	37.6	52	2.4	–
March	70.8	40.2	55.5	1.5	–
April	73.9	44.2	59.1	0.8	–
May	79.9	50.8	65.4	0.3	–
June	87.2	55.6	71.4	0.1	–
July	94.1	61.6	77.9	0.1	–
August	94.9	61.7	78.3	0.4	–
September	91.5	58.7	75.1	0.2	–
October	81.9	49.1	65.5	0.5	–
November	72.3	40.7	56.5	0.7	–
December	64.8	37.1	51	1.8	–

What to plant when in Moreno Valley

Moreno Valley is frost-free, so there's no last-frost date to time from. Grow cool-season crops (lettuce, peas, broccoli, carrots) in the cooler months and warm-season crops (tomatoes, peppers, beans, squash) through the warm season.

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Gear that helps you plant on time

Some links below are Amazon affiliate links (tag theboringthin-20). If you buy through them we may earn a small commission at no extra cost to you — it keeps this almanac free. We only list generic, genuinely-useful categories.

Soil thermometer →Know when the ground is warm enough to sow — the honest signal, not the calendar.Seed-starting trays + dome →Start tomatoes & peppers indoors on the schedule below.Seedling heat mat →Warms the soil for faster, more even germination indoors.Floating row cover / frost cloth →Buys you 4–8°F to beat an early or late frost.Raised garden bed kit →Warms and drains faster in spring than in-ground soil.Garden gloves →Basic kit for transplant day.

Nearby cities in California

Colton, CA Riverside, CA Redlands, CA Perris, CA Highland, CA Rialto, CA Beaumont, CA Yucaipa, CA

Sources & method. Hardiness zone: 2023 USDA Plant Hardiness Zone Map (PRISM Climate Group, Oregon State University). Frost dates & growing season: NOAA/NCEI 1991–2020 U.S. Climate Normals, nearest station with published freeze normals — Riverside Citrus Exp, CA, 7.3 mi (confidence: high). Monthly weather normals: March Afb, CA, 1.6 mi (confidence: high). ZIP centroid from U.S. Census 2023 ZCTA data. Frost dates are the 50%-probability date — half of years frost occurs outside the stated date. Nothing here is invented; where the nearest station is far, we say so. Last updated 2026-07-22.