Fallon, Nevada climate: Normal weather by month, frost dates and records
Fallon's normal year runs from 20°F December nights to 96°F July afternoons, with 4.9 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 12.1°C, December lows of −6°C, July highs of 36°C, 125 mm of precipitation a year.
- NOAA stationFallon Naas
- Station IDUSW00093102
- Location39.42°N 118.72°W
- Elevation3,934 ft (1,199 m)
- Population9,647
On October 14, the normal high in Fallon is 72°F and the normal low 37°F, and the chance of measurable rain or snow is 8%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Fallon.
- Jan 47° 22°
- Feb 53° 25°
- Mar 61° 31°
- Apr 67° 35°
- May 76° 44°
- Jun 87° 51°
- Jul 96° 58°
- Aug 94° 55°
- Sep 85° 48°
- Oct 71° 36°
- Nov 56° 26°
- Dec 46° 20°
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 Fallon each month?
July is the warmest month, with normal highs of 96°F; December the coldest, with normal lows of 20°F. The most precipitation falls in May (0.86 in), the least in August (0.09 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 47°F | 22°F | 34.2°F | 0.51 | 6 | <1 | 28 | 9 h 40 min |
| February | 53°F | 25°F | 38.9°F | 0.45 | 5 | <1 | 23 | 10 h 40 min |
| March | 61°F | 31°F | 45.8°F | 0.49 | 4 | <1 | 18 | 11 h 50 min |
| April | 67°F | 35°F | 51.1°F | 0.49 | 4 | <1 | 10 | 13 h 10 min |
| May | 76°F | 44°F | 59.8°F | 0.86 | 6 | 3 | 1 | 14 h 20 min |
| June | 87°F | 51°F | 68.9°F | 0.41 | 3 | 14 | <1 | 15 h |
| July | 96°F | 58°F | 77.2°F | 0.14 | 2 | 28 | <1 | 14 h 40 min |
| August | 94°F | 55°F | 74.7°F | 0.09 | 1 | 26 | <1 | 13 h 50 min |
| September | 85°F | 48°F | 66.2°F | 0.24 | 2 | 11 | 1 | 12 h 30 min |
| October | 71°F | 36°F | 53.3°F | 0.37 | 3 | 1 | 10 | 11 h 10 min |
| November | 56°F | 26°F | 41.3°F | 0.47 | 4 | <1 | 22 | 10 h |
| December | 46°F | 20°F | 33.1°F | 0.42 | 5 | <1 | 27 | 9 h 20 min |
| Year (annual) | 70°F | 38°F | 53.7°F | 4.94 | 44 | 82 | 139 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 8°C | −6°C | 1.2°C | 13 mm |
| February | 12°C | −4°C | 3.8°C | 11 mm |
| March | 16°C | −1°C | 7.7°C | 12 mm |
| April | 19°C | 2°C | 10.6°C | 12 mm |
| May | 25°C | 6°C | 15.4°C | 22 mm |
| June | 31°C | 11°C | 20.5°C | 10 mm |
| July | 36°C | 15°C | 25.1°C | 4 mm |
| August | 34°C | 13°C | 23.7°C | 2 mm |
| September | 29°C | 9°C | 19.0°C | 6 mm |
| October | 21°C | 2°C | 11.8°C | 9 mm |
| November | 13°C | −3°C | 5.2°C | 12 mm |
| December | 8°C | −6°C | 0.6°C | 11 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Fallon's own co-op station Fallon Experiment Station does: 5 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093102; 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 Fallon?
Normal highs sit between 65°F and 85°F in April, May, September and October. Of those, September has the fewest days with rain (2).
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 USW00093102.
When is the last frost in Fallon?
In Fallon, the last spring frost (32°F) comes after May 6 in half of years and after May 25 in one year in ten; the first autumn frost comes before October 8 in half of years and before September 25 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
- May 61 year in 10 after May 25; 9 in 10 after April 21
- First autumn frost, half of years before
- October 81 year in 10 before September 25; 9 in 10 before October 21
NOAA puts the median frost-free season at 153 days, and the season without a hard freeze (28°F) at 176 days.
A hard freeze (28°F) comes after April 24 in half of springs and before October 17 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Fallon in zone 7a in ZIP code 89408, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Fallon's NOAA station is in zone 7a: the coldest night of a typical year reaches 3°F (17 complete years).
Frost dates for every NOAA station in Nevada · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00093102; 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 Fallon?
In a normal year in Fallon, 82 days a year reach 90°F (15 of them 100°F or more), 139 nights fall to 32°F or colder and 44 days bring measurable precipitation.
- Days at 90°F or more
- 82a normal year
- Days at 100°F or more
- 15a normal year
- Nights at 32°F or colder
- 139a normal year
- Days that stay below freezing
- 5high of 32°F or less
- Days with 0.01 inch of precipitation
- 44a normal year
The highest temperature in this station's record (since 1945) is 109°F, on July 12, 2021; the lowest is −23°F, on February 6, 1989.
The wettest calendar year on that record is 1995, with 9.27 in; the snowiest season is 1963–64, with 25.1 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USW00093102; records: ACIS (NOAA Regional Climate Centers), station USW00093102. Records use complete months only; a month missing more than three days is left out.
How sunny is Fallon?
Over a year 87% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Fallon, 5.2 kWh per square metre a day. August is the sunniest month (94%) and December the cloudiest (69%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 75% | 2.4 |
| February | 77% | 3.4 |
| March | 80% | 4.8 |
| April | 83% | 6.3 |
| May | 86% | 7.3 |
| June | 92% | 8.3 |
| July | 93% | 8.0 |
| August | 94% | 7.2 |
| September | 93% | 5.9 |
| October | 89% | 4.3 |
| November | 80% | 2.8 |
| December | 69% | 2.0 |
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 Fallon need?
A normal year in Fallon brings 5,088 heating degree days, 5% fewer than the median U.S. place (5,373), and 1,004 cooling degree days, 11% 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 3,309 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 953 | 0 |
| February | 729 | 0 |
| March | 594 | 0 |
| April | 417 | 2 |
| May | 199 | 39 |
| June | 47 | 165 |
| July | 1 | 381 |
| August | 4 | 304 |
| September | 71 | 106 |
| October | 372 | 7 |
| November | 712 | 0 |
| December | 989 | 0 |
| Year (annual) | 5,088 | 1,004 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00093102. 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 Fallon been warmer than normal lately?
2025 averaged 56.6°F, 2.9°F above the 1991-2020 normal of 53.7°F. 1 of the 2 complete years since 2023 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2023 | 53.5°F | −0.2°F | – |
| 2025 | 56.6°F | +2.9°F | – |
Over 36 complete years from 1955 to 2025, the station's annual mean temperature rose at a fitted 5.3°F per century (+0.30°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USW00093102; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Fallon's climate compare?
Fallon is warmer than 36 of the other 54 places with their own NOAA record in Nevada, and wetter than 7. Across the 7,247 U.S. stations with normals, its annual mean of 53.7°F is warmer than 56%.
In the Köppen classification computed from these normals, Fallon is BWk: cold desert. 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 Fallon share this climate record?
Fallon Station has no NOAA station with 1991-2020 normals of its 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.
- Fallon Station, NV1,250 people · 0 mi S
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Fallon's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Fallon. This page uses Fallon Naas; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Fallon Experiment Station USC00262780 | 4 mi NW | 3,965 ft | 52.1°F | 20°F | 94°F | 4.8 | 5 | May 12 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Fallon's climate
What is the coldest month in Fallon?
December, with a normal high of 46°F and a normal low of 20°F. The warmest is July (96°F by day, 58°F at night).
Does it snow in Fallon?
Yes. NOAA publishes no 1991-2020 snowfall normal for Fallon's NOAA station; Fallon's own co-op station Fallon Experiment Station records 5 inches of snow in a normal year.
What is the rainiest month in Fallon?
May, with 0.86 in of precipitation in a normal year; the driest is August with 0.09 in.
What plant hardiness zone is Fallon in?
The USDA's 2023 map puts Fallon in zone 7a in ZIP code 89408, the nearest ZIP area. By the same method at Fallon's NOAA station, the coldest night of a typical year reaches 3°F (17 years, 1991-2020): zone 7a.
How late can frost come in Fallon?
In half of years the last 32°F night comes after May 6; in one year in ten it comes after May 25. Waiting until May 25 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Nevada climateThe statewide normals and every place in the state
- Lahontan Dam, NV19 miles from this station, 56.5°F a year
- Wabuska (6 mi SE), NV32 miles from this station, 50.6°F a year
- Wadsworth, NV36 miles from this station, 52.5°F a year
- Yerington, NV37 miles from this station, 53.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made