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USDA Hardiness Zone 6b

Frost Dates for 67665 — Russell, Kansas

NOAA 1991–2020 normals from Russell Municipal Airport, KS (1,864 ft), 3 miles east.

Updated

In Russell, the last spring frost (32°F) is around April 22 in half of years and has passed by May 6 in nine years out of ten. The first fall frost comes around October 17, as early as October 1 one year in ten, leaving a typical freeze-free season of 176 days (NOAA, Russell Municipal Airport, KS).

Last spring frost
April 22

50% probability

First fall frost
October 17

50% probability

Growing season
176 days

freeze-free, 50%

Hardiness zone
6b

-5 to 0°F (-20.6 to -17.8°C) coldest night

First snow
November 26

median, 1991–2020

Last snow
March 20

median, 1991–2020

Winters with snow
93%

14 of 15 observed

Snow per year
13.2"

NOAA normal

Frost risk by date in Russell

Half of springs at Russell Municipal Airport, KS see their last 32°F night by April 22; only one in ten is past it by April 9, and one in ten still has one after May 6. Planting tender crops after April 29 leaves a 30% risk of a frost on them, after May 2 20%, and after May 6 10%. The 14 days between the even-odds date and the one-in-ten date is narrower than at 44% of the 110 Kansas stations behind this site's ZIP pages.

In fall the first 32°F night comes by October 17 in half of years, as early as October 1 one year in ten, and holds off past October 31 one year in ten. A hard freeze of 28°F follows 10 days later, around October 27; in spring the one-in-ten date for 28°F is April 27, 9 days before the 32°F one. The freeze-free season lasts 176 days in a typical year, shorter than at 80% of the 110 Kansas stations; it reaches 196 days one year in ten and falls short of 155 one year in ten. On average 130 nights a year drop to 32°F or below. Nights of 36°F, when frost can still settle on leaves in low, open spots, continue 10 days longer, to about May 2, and return around October 8. Severe cold of 16°F or below comes every winter, usually between November 21 and March 11.

Spring: the chance of another night this cold after the date
Low90%80%70%60%50%40%30%20%10%
36°FApr 18Apr 23Apr 27Apr 30May 2May 4May 7May 10May 14
32°FApr 9Apr 13Apr 16Apr 19Apr 22Apr 25Apr 29May 2May 6
28°FMar 28Apr 2Apr 6Apr 9Apr 12Apr 15Apr 18Apr 22Apr 27
24°FMar 15Mar 22Mar 27Mar 31Apr 3Apr 6Apr 9Apr 13Apr 18
20°FMar 5Mar 10Mar 15Mar 20Mar 23Mar 28Apr 1Apr 5Apr 10
16°FFeb 23Mar 1Mar 4Mar 8Mar 11Mar 15Mar 21Mar 27Apr 3
Fall: the chance the first night this cold has come by the date
Low10%20%30%40%50%60%70%80%90%
36°FSep 25Sep 29Oct 2Oct 5Oct 8Oct 11Oct 14Oct 16Oct 20
32°FOct 1Oct 6Oct 11Oct 14Oct 17Oct 20Oct 22Oct 26Oct 31
28°FOct 11Oct 17Oct 21Oct 23Oct 27Oct 29Nov 1Nov 4Nov 9
24°FOct 20Oct 25Oct 29Nov 1Nov 3Nov 6Nov 9Nov 13Nov 17
20°FOct 28Nov 1Nov 5Nov 9Nov 12Nov 15Nov 18Nov 22Nov 28
16°FNov 3Nov 10Nov 13Nov 18Nov 21Nov 24Nov 28Dec 1Dec 9

Freeze probabilities 1991–2020 at Russell Municipal Airport, KS, from NOAA NCEI U.S. Climate Normals. Where a temperature is reached in fewer than 99.5% of years, the dates describe only the years that reach it. Not a forecast.

Frost risk on any date in 67665 →Compare Russell with another place →

Weather by month in Russell

July is the warmest month at Russell Municipal Airport, KS, averaging 93°F by day and 67°F at night; January is the coldest at 42°F and 19°F. A freezing night is all but certain in every month from October to April (a 90% chance or more). From June to September the chance of a 32°F night stays under 10% each month. In spring, May still brings one in 23% of years.

Warmth for growing adds up to 4,085 growing degree days a year (base 50°F), fewer than at 52% of the 110 Kansas stations. 35% of them (1,440) have built up by the end of June, and July adds the most, 928. Precipitation totals 25.0 inches a year, most in May (4.0") and least in January (0.6"); May to September bring 67% of it.

Monthly normals 1991–2020 at Russell Municipal Airport, KS
MonthHigh °FLow °FPrecip. in32°F nightNights ≤ 32°FGDD 50°F
Jan42190.6100%301
Feb46220.7100%2510
Mar57311.3100%1865
Apr67402.299%6175
May76524.023%<1437
Jun88623.30%0751
Jul93674.00%0928
Aug90653.30%0852
Sep82572.29%<1580
Oct69431.790%5241
Nov55301.0100%1942
Dec43210.7100%292

Monthly normals 1991–2020 at Russell Municipal Airport, KS (1,864 ft), NOAA NCEI. "32°F night": chance of at least one in the month. GDD: growing degree days, base 50°F.

Compared with the next station

The nearest other station, Hays, KS, 24 miles west of Russell, has a last frost 3 days earlier (April 19), a first frost 5 days later (October 22), a season 8 days longer.

Frost dates for 67601 (Hays) →

When it snows in Russell, Kansas

The first measurable snow (0.1 inch or more) in Russell usually arrives around November 26, and the last of the season around March 20. Those are the middle dates across the winters of 1991–2020 at Galatia 4E, KS, 15.9 miles away: half of years saw snow earlier, half later. Snow fell in 93% of those winters. The last 32°F night of spring typically comes 33 days after the last snow.

Planting calendar for 67665

What to do and when, from the 50% frost dates for Russell, Kansas
WhenWhat to do
February 11 – February 25Start peppers and aubergines indoorsThey need eight to ten weeks under lights before they can go out.
February 25 – March 11Start tomatoes indoorsSix to eight weeks gives a transplant big enough to set fruit early.
March 25 – April 8Sow peas, spinach, lettuce, radish outdoorsThese tolerate light frost and prefer to germinate in cool soil.
April 22 onwardTransplant tomatoes, peppers, basil, squash, cucumbersThe average last freeze has passed — still watch the actual forecast.
by July 25Sow the autumn crop of carrots, beets and brassicasThey need about twelve weeks to size up before growth stops.
by October 3Harvest tender crops, or be ready to cover themA first freeze two weeks early is well within normal variation.
October 17 onwardPlant garlic, mulch beds, lift tender bulbsGarlic wants a cold spell; bare soil loses structure over winter.

The weeks before and after the 50% dates are general rules of thumb, not NOAA figures; a seed packet gives the timing for each variety.

Where these figures come from

ZIP 67665 is 3 miles from Russell Municipal Airport, KS, which stands at 1,864 feet, the nearest NOAA station that publishes freeze probabilities for 1991–2020. The 2023 USDA Plant Hardiness Zone Map lists ZIP 67665 in zone 6b, the band where the coldest night of the year averaged -5 to 0°F (-20.6 to -17.8°C) over 1991–2020; a zone describes winter lows, not frost dates.

Frost dates across Kansas →

Hardiness zone and temperature range: USDA Plant Hardiness Zone Map 2023 (USDA-ARS, Oregon State University), ZIP-code listing, unchanged. °C converted from °F by this site.

Thirty-year averages, not a forecast: check the forecast before planting out. How stations are matched and which pages are offered to search engines: methodology.

Other zone 6b places in Kansas