Troy, Kansas climate: Normal weather by month, frost dates and records
Troy's normal year runs from 17°F January nights to 87°F July afternoons, with 36.8 inches of precipitation and 21 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.7°C, January lows of −8°C, July highs of 30°C, 936 mm of precipitation a year.
- NOAA stationTroy (3 mi N)
- Station IDUSC00148250
- Location39.83°N 95.09°W
- Elevation1,040 ft (317 m)
- Population982
On October 23, the normal high in Troy is 64°F and the normal low 41°F, and the chance of measurable rain or snow is 25%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Troy.
- Jan 36° 17°
- Feb 42° 21°
- Mar 54° 31°
- Apr 65° 42°
- May 74° 53°
- Jun 83° 63°
- Jul 87° 67°
- Aug 85° 65°
- Sep 79° 56°
- Oct 67° 44°
- Nov 53° 32°
- Dec 40° 22°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Troy each month?
July is the warmest month, with normal highs of 87°F; January the coldest, with normal lows of 17°F. The most precipitation falls in May (5.13 in), the least in January (0.97 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 36°F | 17°F | 26.5°F | 0.97 | 5.5 | 7 | <1 | 28 | 9 h 40 min |
| February | 42°F | 21°F | 31.2°F | 1.37 | 5.9 | 6 | <1 | 23 | 10 h 40 min |
| March | 54°F | 31°F | 42.5°F | 2.23 | 2.2 | 9 | <1 | 17 | 11 h 50 min |
| April | 65°F | 42°F | 53.0°F | 3.75 | 0.8 | 11 | <1 | 6 | 13 h 10 min |
| May | 74°F | 53°F | 63.6°F | 5.13 | 0.1 | 12 | 1 | <1 | 14 h 20 min |
| June | 83°F | 63°F | 72.9°F | 4.50 | 0.0 | 10 | 5 | <1 | 15 h |
| July | 87°F | 67°F | 76.9°F | 5.00 | 0.0 | 9 | 11 | <1 | 14 h 40 min |
| August | 85°F | 65°F | 74.9°F | 3.90 | 0.0 | 9 | 9 | <1 | 13 h 50 min |
| September | 79°F | 56°F | 67.3°F | 3.40 | 0.0 | 8 | 3 | <1 | 12 h 30 min |
| October | 67°F | 44°F | 55.4°F | 3.06 | 0.3 | 8 | <1 | 5 | 11 h 10 min |
| November | 53°F | 32°F | 42.2°F | 1.96 | 1.3 | 6 | <1 | 16 | 10 h |
| December | 40°F | 22°F | 31.0°F | 1.57 | 5.0 | 6 | <1 | 26 | 9 h 20 min |
| Year (annual) | 64°F | 43°F | 53.1°F | 36.84 | 21.1 | 101 | 29 | 121 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 2°C | −8°C | −3.1°C | 25 mm | 14 cm |
| February | 5°C | −6°C | −0.4°C | 35 mm | 15 cm |
| March | 12°C | 0°C | 5.8°C | 57 mm | 6 cm |
| April | 18°C | 5°C | 11.7°C | 95 mm | 2 cm |
| May | 23°C | 12°C | 17.6°C | 130 mm | 0 cm |
| June | 28°C | 17°C | 22.7°C | 114 mm | 0 cm |
| July | 30°C | 19°C | 24.9°C | 127 mm | 0 cm |
| August | 30°C | 18°C | 23.8°C | 99 mm | 0 cm |
| September | 26°C | 13°C | 19.6°C | 86 mm | 0 cm |
| October | 19°C | 7°C | 13.0°C | 78 mm | 1 cm |
| November | 11°C | 0°C | 5.7°C | 50 mm | 3 cm |
| December | 4°C | −6°C | −0.6°C | 40 mm | 13 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00148250; annual normals. Wet days: 0.01 inch or more; 90°F days and freezing nights: NOAA's day counts. Daylight: sunrise to sunset on the 15th, computed from the latitude.
When is the best weather to visit Troy?
Normal highs sit between 65°F and 85°F in May, June, September and October. Of those, September has the fewest days with rain (8).
That is a measurement, not a recommendation: it counts the months whose normal afternoon high sits between 65°F and 85°F, where a light layer is enough by day.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00148250.
When is the last frost in Troy?
In Troy, the last spring frost (32°F) comes after April 19 in half of years and after May 5 in one year in ten; the first autumn frost comes before October 19 in half of years and before October 2 in one year in ten.
Frost-free in half of yearsFrost in 1 to 9 years out of 10Frost most years
- Last spring frost, half of years after
- April 191 year in 10 after May 5; 9 in 10 after April 4
- First autumn frost, half of years before
- October 191 year in 10 before October 2; 9 in 10 before November 1
NOAA puts the median frost-free season at 182 days, and the season without a hard freeze (28°F) at 202 days.
A hard freeze (28°F) comes after April 8 in half of springs and before October 29 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Troy in zone 6a in ZIP code 66087, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Troy's NOAA station is in zone 6a: the coldest night of a typical year reaches −8°F (27 complete years).
Frost dates for every NOAA station in Kansas · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00148250; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026; the station zone: ACIS daily lows, 1991-2020. A 10% date means one year in ten has a frost after it in spring or before it in autumn.
How hot and how cold does it get in Troy?
In a normal year in Troy, 29 days a year reach 90°F (1 of them 100°F or more), 121 nights fall to 32°F or colder and 101 days bring measurable precipitation.
- Days at 90°F or more
- 29a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 121a normal year
- Days that stay below freezing
- 31high of 32°F or less
- Days with 0.01 inch of precipitation
- 101a normal year
- Days with 1 inch of snow or more
- 7a normal year
The highest temperature in this station's record (since 1950) is 106°F, on July 18, 1954; the lowest is −23°F, on February 16, 2021.
The wettest calendar year on that record is 1973, with 63.04 in; the snowiest season is 2009–10, with 53.2 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00148250; records: ACIS (NOAA Regional Climate Centers), station USC00148250. Records use complete months only; a month missing more than three days is left out.
How sunny is Troy?
Over a year 77% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Troy, 4.3 kWh per square metre a day. July is the sunniest month (83%) and March the cloudiest (70%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 2.2 |
| February | 72% | 3.0 |
| March | 70% | 3.9 |
| April | 71% | 5.0 |
| May | 74% | 5.8 |
| June | 81% | 6.6 |
| July | 83% | 6.5 |
| August | 82% | 5.8 |
| September | 82% | 4.8 |
| October | 77% | 3.5 |
| November | 76% | 2.5 |
| December | 72% | 1.9 |
Source: NASA POWER solar climatology, 2001-2020 (CERES SYN1deg). Satellite-based, for the 1-degree cell (about 100 km across) around the station, so it describes the area rather than the airport.
How much heating and cooling does Troy need?
A normal year in Troy brings 5,493 heating degree days, 2% more than the median U.S. place (5,373), and 1,200 cooling degree days, 32% more than the median (908). Seven months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,760 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,193 | 0 |
| February | 946 | 0 |
| March | 702 | 3 |
| April | 371 | 13 |
| May | 129 | 87 |
| June | 12 | 250 |
| July | 2 | 369 |
| August | 4 | 313 |
| September | 70 | 139 |
| October | 323 | 25 |
| November | 686 | 1 |
| December | 1,054 | 0 |
| Year (annual) | 5,493 | 1,200 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00148250. A degree day is one degree of a day's mean temperature below 65°F (heating) or above it (cooling); utilities use them to estimate energy use.
Has Troy been warmer than normal lately?
2022 averaged 48.6°F, 4.5°F below the 1991-2020 normal of 53.1°F.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 48.6°F | −4.5°F | 32.72 | 22.0 |
Over 50 complete years from 1951 to 2018, the station's annual mean temperature rose at a fitted 2.8°F per century (+0.16°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00148250; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Troy's climate compare?
Troy is warmer than 24 of the other 136 places with their own NOAA record in Kansas, and wetter than 95. Across the 7,247 U.S. stations with normals, its annual mean of 53.1°F is warmer than 54%.
In the Köppen classification computed from these normals, Troy is Dfa: continental, no dry season, hot summer. What the classes mean.
Places with the most similar year elsewhere
Measured month by month on the normal high, low and precipitation, among places of 20,000 or more people in other states:
Source: NOAA NCEI 1991-2020 normals for every station PlainClimate covers. Similarity: the root-mean-square difference of the 36 monthly figures, precipitation weighted so an inch counts like 6°F.
Which places near Troy share this climate record?
5 places have no NOAA station with 1991-2020 normals of their own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- Savannah, MO5,076 people · 16 mi NE
- Country Club, MO2,495 people · 14 mi E
- Amazonia, MO236 people · 11 mi E
- Fillmore, MO172 people · 15 mi NE
- Rosendale, MO120 people · 20 mi NE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Troy's climate
What is the coldest month in Troy?
January, with a normal high of 36°F and a normal low of 17°F. The warmest is July (87°F by day, 67°F at night).
Does it snow in Troy?
Yes: 21 inches in a normal year, falling on 13 days with 0.1 inch or more, the most in February (5.9 inches).
What is the rainiest month in Troy?
May, with 5.13 in of precipitation in a normal year; the driest is January with 0.97 in.
What plant hardiness zone is Troy in?
The USDA's 2023 map puts Troy in zone 6a in ZIP code 66087, the nearest ZIP area. By the same method at Troy's NOAA station, the coldest night of a typical year reaches −8°F (27 years, 1991-2020): zone 6a.
How late can frost come in Troy?
In half of years the last 32°F night comes after April 19; in one year in ten it comes after May 5. Waiting until May 5 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Kansas climateThe statewide normals and every place in the state
- St. Joseph, MO9 miles from this station, 53.7°F a year
- Oregon, MO11 miles from this station, 52.7°F a year
- Atchison, KS17 miles from this station, 54.2°F a year
- Cosby, MO21 miles from this station, 52.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made