Bethpage, Tennessee climate: Normal weather by month, frost dates and records
Bethpage's normal year runs from 25°F January nights to 88°F July afternoons, with 55.0 inches of precipitation and 5 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.7°C, January lows of −4°C, July highs of 31°C, 1,396 mm of precipitation a year.
- NOAA stationBethpage (1 mi S)
- Station IDUSC00400669
- Location36.46°N 86.32°W
- Elevation560 ft (171 m)
- Population (census place)493
On October 22, the normal high in Bethpage is 69°F and the normal low 41°F, and the chance of measurable rain or snow is 27%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Bethpage.
- Jan 45° 25°
- Feb 50° 28°
- Mar 59° 34°
- Apr 69° 43°
- May 77° 53°
- Jun 84° 62°
- Jul 88° 67°
- Aug 87° 65°
- Sep 82° 57°
- Oct 71° 44°
- Nov 59° 34°
- Dec 49° 28°
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 Bethpage each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 25°F. The most precipitation falls in May (5.72 in), the least in September (3.74 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 45°F | 25°F | 35.3°F | 4.41 | 2.3 | 11 | <1 | 23 | 10 h |
| February | 50°F | 28°F | 39.0°F | 4.71 | 1.5 | 10 | <1 | 20 | 10 h 50 min |
| March | 59°F | 34°F | 46.8°F | 4.91 | 0.3 | 12 | <1 | 14 | 11 h 50 min |
| April | 69°F | 43°F | 55.9°F | 5.16 | 0.0 | 10 | <1 | 4 | 13 h 10 min |
| May | 77°F | 53°F | 65.2°F | 5.72 | 0.0 | 11 | 1 | <1 | 14 h |
| June | 84°F | 62°F | 73.4°F | 4.60 | 0.0 | 9 | 7 | <1 | 14 h 40 min |
| July | 88°F | 67°F | 77.2°F | 5.17 | 0.0 | 9 | 13 | <1 | 14 h 30 min |
| August | 87°F | 65°F | 76.0°F | 3.82 | 0.0 | 8 | 11 | <1 | 13 h 40 min |
| September | 82°F | 57°F | 69.5°F | 3.74 | 0.0 | 7 | 5 | <1 | 12 h 30 min |
| October | 71°F | 44°F | 57.4°F | 3.81 | 0.0 | 8 | <1 | 4 | 11 h 20 min |
| November | 59°F | 34°F | 46.2°F | 3.90 | 0.0 | 9 | <1 | 15 | 10 h 20 min |
| December | 49°F | 28°F | 38.6°F | 5.01 | 0.5 | 12 | <1 | 21 | 9 h 40 min |
| Year (annual) | 68°F | 45°F | 56.7°F | 54.96 | 4.6 | 116 | 36 | 101 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 7°C | −4°C | 1.8°C | 112 mm | 6 cm |
| February | 10°C | −2°C | 3.9°C | 120 mm | 4 cm |
| March | 15°C | 1°C | 8.2°C | 125 mm | 1 cm |
| April | 20°C | 6°C | 13.3°C | 131 mm | 0 cm |
| May | 25°C | 12°C | 18.4°C | 145 mm | 0 cm |
| June | 29°C | 17°C | 23.0°C | 117 mm | 0 cm |
| July | 31°C | 19°C | 25.1°C | 131 mm | 0 cm |
| August | 31°C | 18°C | 24.4°C | 97 mm | 0 cm |
| September | 28°C | 14°C | 20.8°C | 95 mm | 0 cm |
| October | 22°C | 7°C | 14.1°C | 97 mm | 0 cm |
| November | 15°C | 1°C | 7.9°C | 99 mm | 0 cm |
| December | 9°C | −2°C | 3.7°C | 127 mm | 1 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00400669; 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 Bethpage?
Normal highs sit between 65°F and 85°F in April, May, June, September and October. Of those, September has the fewest days with rain (7).
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 USC00400669.
When is the last frost in Bethpage?
In Bethpage, the last spring frost (32°F) comes after April 16 in half of years and after May 2 in one year in ten; the first autumn frost comes before October 23 in half of years and before October 10 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 161 year in 10 after May 2; 9 in 10 after March 31
- First autumn frost, half of years before
- October 231 year in 10 before October 10; 9 in 10 before November 4
NOAA puts the median frost-free season at 189 days, and the season without a hard freeze (28°F) at 210 days.
A hard freeze (28°F) comes after April 3 in half of springs and before October 31 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Bethpage in zone 7b in ZIP code 37022, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Bethpage's NOAA station is in zone 7a: the coldest night of a typical year reaches 4°F (15 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in Tennessee · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00400669; 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 Bethpage?
In a normal year in Bethpage, 36 days a year reach 90°F (1 of them 100°F or more), 101 nights fall to 32°F or colder and 116 days bring measurable precipitation.
- Days at 90°F or more
- 36a normal year
- Days at 100°F or more
- 1a normal year
- Nights at 32°F or colder
- 101a normal year
- Days that stay below freezing
- 8high of 32°F or less
- Days with 0.01 inch of precipitation
- 116a normal year
- Days with 1 inch of snow or more
- 2a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00400669.
How sunny is Bethpage?
Over a year 75% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Bethpage, 4.2 kWh per square metre a day. August is the sunniest month (81%) and February the cloudiest (62%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 65% | 2.2 |
| February | 62% | 2.8 |
| March | 67% | 3.9 |
| April | 74% | 5.2 |
| May | 75% | 5.7 |
| June | 80% | 6.3 |
| July | 80% | 6.1 |
| August | 81% | 5.6 |
| September | 79% | 4.7 |
| October | 75% | 3.6 |
| November | 73% | 2.6 |
| December | 64% | 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 Bethpage need?
A normal year in Bethpage brings 4,293 heating degree days, 20% fewer than the median U.S. place (5,373), and 1,289 cooling degree days, 42% more than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,093 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 922 | 0 |
| February | 730 | 0 |
| March | 568 | 3 |
| April | 291 | 16 |
| May | 92 | 97 |
| June | 5 | 257 |
| July | 0 | 377 |
| August | 1 | 340 |
| September | 36 | 171 |
| October | 263 | 27 |
| November | 566 | 1 |
| December | 819 | 0 |
| Year (annual) | 4,293 | 1,289 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00400669. 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 Bethpage been warmer than normal lately?
2025 averaged 57.6°F, 0.9°F above the 1991-2020 normal of 56.7°F. 3 of the 3 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2021 | 57.5°F | +0.8°F | 52.64 | 6.5 |
| 2024 | 58.7°F | +2.0°F | 63.87 | 5.5 |
| 2025 | 57.6°F | +0.9°F | 57.01 | 5.0 |
Source: observed years: ACIS, station USC00400669. A year counts only with all twelve months complete.
How does Bethpage's climate compare?
Bethpage is warmer than 19 of the other 115 places with their own NOAA record in Tennessee, and wetter than 44. Across the 7,247 U.S. stations with normals, its annual mean of 56.7°F is warmer than 66%.
In the Köppen classification computed from these normals, Bethpage is Cfa: temperate, 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 Bethpage share this climate record?
4 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.
- Gallatin, TNalso near: Old Hickory Weather Office (11 mi, 58.6°F a year); White House (11 mi, 58.2°F a year)52,489 people · 10 mi SW
- Castalian Springs, TN648 people · 4 mi S
- Graball, TN242 people · 7 mi W
- Bransford, TN153 people · 4 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 Bethpage's climate
What is the coldest month in Bethpage?
January, with a normal high of 45°F and a normal low of 25°F. The warmest is July (88°F by day, 67°F at night).
Does it snow in Bethpage?
Yes: 5 inches in a normal year, falling on 3 days with 0.1 inch or more, the most in January (2.3 inches).
What is the rainiest month in Bethpage?
May, with 5.72 in of precipitation in a normal year; the driest is September with 3.74 in.
What plant hardiness zone is Bethpage in?
The USDA's 2023 map puts Bethpage in zone 7b in ZIP code 37022, the nearest ZIP area. By the same method at Bethpage's NOAA station, the coldest night of a typical year reaches 4°F (15 years, 1991-2020): zone 7a.
How late can frost come in Bethpage?
In half of years the last 32°F night comes after April 16; in one year in ten it comes after May 2. Waiting until May 2 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Tennessee climateThe statewide normals and every place in the state
- Hartsville/Trousdale County, TN10 miles from this station, 57.9°F a year
- Portland, TN14 miles from this station, 58.2°F a year
- Lebanon, TN16 miles from this station, 59.1°F a year
- Lafayette, TN17 miles from this station, 58.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made