Castor Township’s winters are milder and less snowy than most of the U.S.
A typical July afternoon reaches 89°, a January night drops to 27°, and about 3 inches of snow falls in a normal winter.
A year in Castor Township at a glance
Each month’s typical high and low, and what it brings.
What stands out about Castor Township’s climate
Compared with towns across the U.S., with Castor Township’s place in Missouri beside it.
What a year in Castor Township feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 204 frost-free days a year
In half of years the last 32° night comes by April 7 and the first by October 27. Frost and day counts come from NOAA’s station at Advance 1 S, MO, 15 miles from the town’s center, at about the same height.
The 2023 USDA map puts Castor Township’s center in zone 7a: the coldest night of a typical winter, averaged over 1991–2020, reaches about 5°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 3 inches of snow a winter
Snow, measured at Sikeston Pwr Stn, MO, falls mostly in February. Precipitation (rain plus melted snow) adds up to 50 inches a year; May is the wettest month and August the driest. Rain or snow falls on about 97 days a year.
Rain + melted snow by month
Inches of water
Snowfall by month
Inches of snow
Heating and cooling a home in Castor Township
75% of the work is heating. Months averaging under 55° run from November through March.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Advance 1 S, MO.
Living with Castor Township’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
204 frost-free days in zone 7a. The last frost comes by Apr 7 in half of years, so many gardeners wait a week or two past that to set out tomatoes. The first fall frost comes by Oct 27.
Months with highs of 62–84° and lows of 40° or more: April, May, September and October. 34 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in Castor Township from natural hazards, earthquakes are the largest share (46%); heat waves, cold waves, winter storms and ice storms together are 18%. Normals are averages; the hazards page covers the extremes.
Natural hazards →Castor Township and its neighbors
Every town next door is within a degree of Castor Township in January and July, closer than the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like Castor Township’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| Castor Township, MO | 27° | 89° | 50" | 3.1" |
| Central City, KY | 27° | 89° | 49" | 4.4" |
| Franklin, VA | 29° | 90° | 49" | 4.1" |
| Forest City, NC | 29° | 90° | 49" | 4.5" |
| Sevierville, TN | 29° | 89° | 51" | 3.6" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in Castor Township averaged 0.6° warmer than the 1900s. The biggest change is in February (+1.5°).
A smaller shift than in 97% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How Castor Township compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with Castor Township’s place among Missouri’s.
Castor Township weather by month
Highs, lows and precipitation from NOAA’s grid at Castor Township’s center; snow, wet days and snow on the ground from Sikeston Pwr Stn, MO. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 44° | 27° | 3.6" | 0.8" | 8 | 1 | 29° – 43° |
| February | 49° | 31° | 3.6" | 1.2" | 8 | 1 | 29° – 48° |
| March | 59° | 38° | 4.7" | 0.6" | 10 | 0 | 42° – 60° |
| April | 70° | 47° | 5.3" | 0.0" | 10 | 0 | 52° – 64° |
| May | 79° | 57° | 5.4" | 0.0" | 10 | 0 | 63° – 75° |
| June | 87° | 66° | 4.0" | 0.0" | 8 | 0 | 72° – 82° |
| July | 89° | 69° | 4.3" | 0.0" | 7 | 0 | 75° – 84° |
| August | 88° | 67° | 3.2" | 0.0" | 6 | 0 | 73° – 84° |
| September | 82° | 60° | 3.3" | 0.0" | 6 | 0 | 67° – 77° |
| October | 71° | 48° | 3.7" | 0.1" | 6 | 0 | 55° – 65° |
| November | 57° | 38° | 4.6" | 0.0" | 8 | 0 | 40° – 53° |
| December | 47° | 30° | 4.2" | 0.4" | 9 | 0 | 26° – 47° |
| Year | 68° | 48° | 49.7" | 3.1" | 97 | 2 |
How much a month can swing
A normal is an average. December swings the most: from 1991 to 2020 its average ranged from 26° to 47°. July is the most reliable, staying within 10°.
Where Castor Township’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at Castor Township’s center.
- Snow: Sikeston Pwr Stn, MO.
- Frost, freezing nights, 90° and 100° days, heating and cooling: Advance 1 S, MO, 15 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about Castor Township’s climate
What is the weather like in Castor Township?
A typical July afternoon reaches 89°, a January night drops to 27°, and about 3 inches of snow falls in a normal winter. Milder January nights than 67% of U.S. towns; hotter July afternoons than 74% of U.S. towns.
How cold does it get in Castor Township in winter?
January nights average 27°. About 97 nights a year reach 32° or below and 1 reach 0° or below. In the coldest January of the last 30 years the month averaged 29°.
How much snow does Castor Township get?
About 3.1 inches in a normal winter at Sikeston Pwr Stn, MO, most of it in February, with snow on the ground about 2 days a year.
How hot does it get in Castor Township?
July, with a typical high of 89° and a low of 69°. About 44 days a year reach 90° (Advance 1 S, MO).
When is the first and last frost in Castor Township?
In half of years the last spring frost (32°) comes by April 7 and the first fall frost by October 27, about 204 frost-free days, at Advance 1 S, MO.
What growing zone is Castor Township in?
Zone 7a on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 5°.
What is the best time of year to visit Castor Township?
By one simple rule (highs of 62–84° and lows of 40° or more), April, May, September and October. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is Castor Township getting warmer?
Yes: 1991–2020 averaged 0.6° warmer than 1901–2000 on NOAA’s grid. A smaller shift than 97% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in Castor Township.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.