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Last and first frost dates in Carson City

United States

In Carson City the last spring frost usually comes around 1 May and the first autumn frost around 22 October, which leaves about 174 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 8 May to 2 July.

Last spring frostaround 1 May
First autumn frostaround 22 October
Frost-free days174 days

Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.

When is the last frost in Carson City?

The last frost in Carson City usually comes around 1 May: that is the median of 2016–2025, so in about half of those years the last night at or below 0 °C came later. Hardy crops start before it and frost-tender ones only after it: in the table below arugula can go into open ground from 10 April, while corn waits until 8 May. The first autumn frost follows around 22 October, about 174 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha8 March – 14 July17 April – 23 August8 May – 23 August
Ageratumfrom 20 February—from 8 May
Arugula——sow 10 April – 17 September
Basil15 March – 20 August22 April – 27 September13 May – 27 September
Beet——sow 10 April – 23 August
Bell Pepper21 February – 3 May22 April – 2 July13 May – 2 July
Black-eyed Susanfrom 14 February—from 8 May
Bok Choy13 March – 31 August17 April – 5 October8 May – 5 October
Borage——sow 8 May – 28 August
Broad bean——sow 10 April – 14 July
Broccoli——sow 10 April – 7 July
Brussels Sprouts3 February – 4 June20 March – 19 July10 April – 19 July
Busy Lizziefrom 13 February—from 8 May
Cabbage——sow 10 April – 14 June
Calendula——sow from 10 April
Carrot——sow 10 April – 30 July
Cauliflower6 February – 7 July20 March – 18 August10 April – 18 August
Celeriac30 January – 4 May17 April – 20 July8 May – 20 July
Celery30 January – 14 May17 April – 30 July8 May – 30 July
Celosiafrom 3 Marchfrom 17 Aprilfrom 8 May
Chamomile——sow 10 April – 18 August
Chayote19 January – 27 April17 April – 24 July8 May – 24 July
Chickpea——sow 10 April – 4 July
Chicory23 February – 29 July—10 April – 23 August
Chili Pepper21 February – 9 June22 April – 8 August13 May – 8 August
China asterfrom 1 Marchfrom 22 Aprilfrom 13 May
Chives——sow 10 April – 9 August
Cilantro——sow 10 April – 19 August
Corn——sow 8 May – 4 July
Corn poppy——sow from 10 April
Cosmosfrom 3 Marchfrom 17 Aprilfrom 8 May
Cucumber25 March – 10 July22 April – 7 August13 May – 7 August
Daikon——sow 10 April – 16 August
Delphiniumfrom 20 January—from 10 April
Dill——sow 10 April – 29 August
Edging lobeliafrom 13 February—from 8 May
Eggplant21 February – 3 May22 April – 2 July13 May – 2 July
Florence fennel3 March – 14 July17 April – 28 August8 May – 28 August
Foxglovefrom 2 January—from 10 April
Garden sorrel——sow 10 April – 17 August
Green Beans——sow 8 May – 12 July
Hollyhock——sow from 10 April
Hyssop——sow 10 April – 10 July
Kale——sow 10 April – 11 August
Kiwano16 March – 17 July17 April – 18 August8 May – 18 August
Kohlrabi——sow 10 April – 21 August
Leek9 January – 25 April20 March – 4 July10 April – 4 July
Lemon balm——sow 10 April – 13 August
Lettuce——sow 10 April – 26 August
Lisianthusfrom 23 Decemberfrom 20 Marchfrom 10 April
Lovage——sow from 10 April
Luffa11 March – 11 May22 April – 22 June13 May – 22 June
Marigoldfrom 6 Marchfrom 17 Aprilfrom 8 May
Marjoram21 February – 29 July—13 May – 27 September
Melon25 March – 27 June22 April – 25 July13 May – 25 July
Microgreens——sow 8 May – 8 October
Moringa4 March – 3 August28 April – 27 September19 May – 27 September
Moss rosefrom 20 February—from 8 May
Mustard greens——sow 10 April – 7 September
Napa cabbage15 March – 8 August17 April – 10 September8 May – 10 September
Nasturtiumfrom 10 Marchfrom 17 Aprilfrom 8 May
Okra11 March – 22 July22 April – 2 September13 May – 2 September
Oregano19 January – 19 July20 March – 17 September10 April – 17 September
Pansyfrom 23 Januaryfrom 20 Marchfrom 10 April
Parsley——sow 10 April – 7 August
Parsnip——sow 10 April – 26 June
Peanut16 March – 17 June22 April – 24 July13 May – 24 July
Peas——sow 10 April – 9 August
Petuniafrom 18 Februaryfrom 22 Aprilfrom 13 May
Physalis3 March – 14 June17 April – 29 July8 May – 29 July
Pumpkin11 March – 16 May22 April – 27 June13 May – 27 June
Purple coneflowerfrom 17 January—from 10 April
Radish——sow 10 April – 22 September
Sage30 January – 15 July20 March – 2 September10 April – 2 September
Scarlet sagefrom 24 February—from 8 May
Snapdragonfrom 14 Januaryfrom 20 Marchfrom 10 April
Soybean——sow 13 May – 3 August
Spinach——sow 10 April – 28 August
Stevia27 February – 5 June17 April – 24 July8 May – 24 July
Stock——sow from 10 April
Sunflower——sow from 8 May
Sweet alyssum——sow from 10 April
Sweet Corn26 March – 29 July17 April – 20 August8 May – 20 August
Sweet peafrom 6 Februaryfrom 20 Marchfrom 10 April
Sweet William——sow from 10 April
Swiss Chard——sow 10 April – 23 August
Thyme——sow 10 April – 4 July
Tomato24 February – 11 May17 April – 2 July8 May – 2 July
Turnip——sow 10 April – 25 August
Watercress——sow 10 April – 5 September
Watermelon25 March – 15 June22 April – 13 July13 May – 13 July
Zinniafrom 24 Marchfrom 28 Aprilfrom 19 May
Zucchini1 April – 15 July22 April – 5 August13 May – 5 August

Planting out: a week after the last frost once the soil is warm enough for the crop; frost-hardy crops three weeks before it; an unheated greenhouse three weeks earlier. Seedlings are sown so they are ready on that day. Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

When the soil warms up in Carson City

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo). The soil reaches 10 °C 10 days before the last spring frost and 15 °C 1 day before it.

SoilDateAgainst the last spring frost
5 °C23 March39 days earlier
10 °C21 April10 days earlier
15 °C30 April1 day earlier
18 °C13 May12 days later

Frost dates near Carson City

Of the nearest cities on our list, the last spring frost ends earliest in Stockton (4 February) and latest in Reno (16 April).

CityDistanceLast spring frostFirst autumn frost
Reno41 km16 April28 October
Sacramento162 km18 February11 December
Stockton188 km4 February3 December
Fresno268 km5 February5 December
San Jose274 km24 February—

Seeds, seedlings and markets in Carson City

Within 15 km of Carson City OpenStreetMap lists 3 garden centres and 1 market (collected 28 October 2026). The nearest garden centre to the city centre is Greenhouse Garden Center, 2 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Carson City

Frosts in Carson City usually come from about 22 October to about 1 May. These plants have indoor care in their Greenly cards and are harvested quickly, so they can be sown on a windowsill in winter.

Weather in Carson City by month

Average weather in Carson City over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: June–September (24.5–30.6 °C). Months that average 30 °C or more by day: July (30.6 °C). Nights average below 0 °C in December–March (-3–-1.3 °C). About 530 mm of rain falls in a year, on 67 days; January is the wettest month (99 mm) and July the driest (3 mm).

MonthDay, °CNight, °CRain, mmRainy days
January4.1-3999
February5.4-2.8878
March7.7-1.38011
April13.92.5336
May196.9246
June2612.282
July30.616.231
August29.415.782
September24.512.1113
October17.56.2374
November10.21.2436
December5.2-1.9979

Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).

Planted in autumn

CropWhen to plant
Bearded Irisby 22 September
Crocus22 September – end of December
Daffodil22 September – end of December
Garlic22 September – end of December
Grape hyacinthby 22 September
Helleboreby 22 September
Hyacinth22 September – end of December
Lilyby 22 September
Ornamental onionby 22 September
Peonyby 22 September
Saffronby 22 September
Snowdropby 22 September
Tulip22 September – end of December
Wild garlicby 22 September

From a month before the first autumn frost, so the roots grow before winter, to the late-planting limit on each crop’s page (about two weeks before the ground freezes, by ten years of weather).