Hatton, Washington climate: Normal weather by month, frost dates and records
Hatton's normal year runs from 26°F December nights to 90°F July afternoons, with 10.8 inches of precipitation and 14 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 11.0°C, December lows of −3°C, July highs of 32°C, 275 mm of precipitation a year.
- NOAA stationHatton (9 mi SE)
- Station IDUSC00453546
- Location46.72°N 118.65°W
- Elevation1,505 ft (459 m)
- Population141
On October 23, the normal high in Hatton is 59°F and the normal low 37°F, and the chance of measurable rain or snow is 24%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Hatton.
- Jan 39° 27°
- Feb 45° 29°
- Mar 55° 34°
- Apr 63° 38°
- May 73° 45°
- Jun 80° 51°
- Jul 90° 58°
- Aug 88° 57°
- Sep 79° 50°
- Oct 63° 40°
- Nov 47° 32°
- Dec 38° 26°
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 Hatton each month?
July is the warmest month, with normal highs of 90°F; December the coldest, with normal lows of 26°F. The most precipitation falls in November (1.41 in), the least in July (0.23 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 39°F | 27°F | 32.8°F | 1.24 | 4.0 | 11 | <1 | 23 | 9 h |
| February | 45°F | 29°F | 36.8°F | 0.90 | 2.5 | 8 | <1 | 19 | 10 h 20 min |
| March | 55°F | 34°F | 44.1°F | 1.27 | 0.7 | 8 | <1 | 12 | 11 h 50 min |
| April | 63°F | 38°F | 50.6°F | 1.05 | 0.1 | 7 | <1 | 5 | 13 h 30 min |
| May | 73°F | 45°F | 59.0°F | 0.93 | 0.0 | 7 | 1 | 1 | 15 h |
| June | 80°F | 51°F | 65.4°F | 0.79 | 0.0 | 5 | 5 | <1 | 15 h 50 min |
| July | 90°F | 58°F | 73.6°F | 0.23 | 0.0 | 2 | 15 | <1 | 15 h 30 min |
| August | 88°F | 57°F | 72.8°F | 0.26 | 0.0 | 2 | 13 | <1 | 14 h 20 min |
| September | 79°F | 50°F | 64.2°F | 0.39 | 0.0 | 3 | 3 | <1 | 12 h 40 min |
| October | 63°F | 40°F | 51.2°F | 1.01 | 0.0 | 7 | <1 | 5 | 11 h |
| November | 47°F | 32°F | 39.4°F | 1.41 | 1.4 | 10 | <1 | 14 | 9 h 30 min |
| December | 38°F | 26°F | 32.1°F | 1.36 | 4.8 | 12 | <1 | 24 | 8 h 30 min |
| Year (annual) | 63°F | 41°F | 51.8°F | 10.84 | 13.5 | 81 | 38 | 103 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 4°C | −3°C | 0.4°C | 31 mm | 10 cm |
| February | 7°C | −2°C | 2.7°C | 23 mm | 6 cm |
| March | 13°C | 1°C | 6.7°C | 32 mm | 2 cm |
| April | 17°C | 3°C | 10.3°C | 27 mm | 0 cm |
| May | 23°C | 7°C | 15.0°C | 24 mm | 0 cm |
| June | 27°C | 11°C | 18.6°C | 20 mm | 0 cm |
| July | 32°C | 14°C | 23.1°C | 6 mm | 0 cm |
| August | 31°C | 14°C | 22.7°C | 7 mm | 0 cm |
| September | 26°C | 10°C | 17.9°C | 10 mm | 0 cm |
| October | 17°C | 4°C | 10.7°C | 26 mm | 0 cm |
| November | 8°C | 0°C | 4.1°C | 36 mm | 4 cm |
| December | 3°C | −3°C | 0.1°C | 35 mm | 12 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00453546; 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 Hatton?
Normal highs sit between 65°F and 85°F in May, June and September. Of those, September has the fewest days with rain (3).
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 USC00453546.
When is the last frost in Hatton?
In Hatton, the last spring frost (32°F) comes after April 25 in half of years and after May 11 in one year in ten; the first autumn frost comes before October 15 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 251 year in 10 after May 11; 9 in 10 after April 4
- First autumn frost, half of years before
- October 151 year in 10 before October 2; 9 in 10 before November 1
NOAA puts the median frost-free season at 173 days, and the season without a hard freeze (28°F) at 210 days.
A hard freeze (28°F) comes after April 1 in half of springs and before October 28 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Hatton in zone 7a in ZIP code 99326, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Hatton's NOAA station is in zone 7a: the coldest night of a typical year reaches 4°F (18 complete years).
Frost dates for every NOAA station in Washington · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00453546; 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 Hatton?
In a normal year in Hatton, 38 days a year reach 90°F (6 of them 100°F or more), 103 nights fall to 32°F or colder and 81 days bring measurable precipitation.
- Days at 90°F or more
- 38a normal year
- Days at 100°F or more
- 6a normal year
- Nights at 32°F or colder
- 103a normal year
- Days that stay below freezing
- 23high of 32°F or less
- Days with 0.01 inch of precipitation
- 81a normal year
- Days with 1 inch of snow or more
- 5a normal year
The highest temperature in this station's record (since 1905) is 114°F, on August 4, 1961; the lowest is −27°F, on January 26, 1957.
The wettest calendar year on that record is 1948, with 15.96 in; the snowiest season is 1949–50, with 47.8 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00453546; records: ACIS (NOAA Regional Climate Centers), station USC00453546. Records use complete months only; a month missing more than three days is left out.
How sunny is Hatton?
Over a year 81% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Hatton, 4.2 kWh per square metre a day. July is the sunniest month (94%) and December the cloudiest (55%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 56% | 1.2 |
| February | 69% | 2.3 |
| March | 72% | 3.6 |
| April | 79% | 5.4 |
| May | 81% | 6.5 |
| June | 85% | 7.2 |
| July | 94% | 7.7 |
| August | 92% | 6.4 |
| September | 87% | 4.7 |
| October | 79% | 3.0 |
| November | 65% | 1.6 |
| December | 55% | 1.0 |
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 Hatton need?
A normal year in Hatton brings 5,494 heating degree days, 2% more than the median U.S. place (5,373), and 724 cooling degree days, 20% fewer 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 2,840 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 997 | 0 |
| February | 790 | 0 |
| March | 648 | 0 |
| April | 433 | 1 |
| May | 214 | 28 |
| June | 75 | 87 |
| July | 8 | 276 |
| August | 11 | 253 |
| September | 100 | 76 |
| October | 430 | 3 |
| November | 768 | 0 |
| December | 1,020 | 0 |
| Year (annual) | 5,494 | 724 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00453546. 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.
How does Hatton's climate compare?
Hatton is warmer than 77 of the other 95 places with their own NOAA record in Washington, and wetter than 15. Across the 7,247 U.S. stations with normals, its annual mean of 51.8°F is warmer than 49%.
In the Köppen classification computed from these normals, Hatton is BSk: cold semi-arid steppe. 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 Hatton share this climate record?
2 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.
- Washtucna, WA199 people · 16 mi E
- Kahlotus, WA141 people · 7 mi SE
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 Hatton's climate
What is the coldest month in Hatton?
December, with a normal high of 38°F and a normal low of 26°F. The warmest is July (90°F by day, 58°F at night).
Does it snow in Hatton?
Yes: 14 inches in a normal year, falling on 12 days with 0.1 inch or more, the most in December (4.8 inches).
What is the rainiest month in Hatton?
November, with 1.41 in of precipitation in a normal year; the driest is July with 0.23 in.
What plant hardiness zone is Hatton in?
The USDA's 2023 map puts Hatton in zone 7a in ZIP code 99326, the nearest ZIP area. By the same method at Hatton's NOAA station, the coldest night of a typical year reaches 4°F (18 years, 1991-2020): zone 7a.
How late can frost come in Hatton?
In half of years the last 32°F night comes after April 25; in one year in ten it comes after May 11. Waiting until May 11 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Washington climateThe statewide normals and every place in the state
- Connell, WA12 miles from this station, 51.7°F a year
- Lind, WA20 miles from this station, 50.8°F a year
- Sagemoor, WA30 miles from this station, 52.0°F a year
- Ritzville, WA30 miles from this station, 48.7°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made