Mercury Desert Rock, NV Climate: Temperature & Rain by Month
Annual temperature and rainfall from NOAA NCEI's 1991–2020 normals →; comfort score computed by PlainClimate
30-year climate normals (1991-2020) from Mercury Desert Rock's primary NOAA station, MERCURY DESERT ROCK AP.
The climate verdict for Mercury Desert Rock
Dryness leads the climate profile for Mercury Desert Rock, Nevada, with 5.2 inches of precipitation a year. NOAA records an annual average of 64°F. It scores 77/100 for climate comfort (good), putting it in the top third of station-mapped location scores and exceeding 70% of them.
- 64°F
- average temperature, NOAA 1991-2020 normal
- 77/100
- comfort score, above 70% of station-mapped location scores
- 5.2"
- annual precipitation · 1" snow
- 246 days
- frost-free growing season
Mercury Desert Rock: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USW00003160 · Mercury Desert Rock, NV 64°F mean · 5.2" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-ARID · SWING-MID · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 64°F
- RANK-UPPER #5,763
- PHOTO-FINISH ≈ Alvord
- PRCP-ARID 5.2"
- SWING-MID 42°F
- COMF-TOP 77/100
- LOAD-MIX H/C balanced
- STN-1 USW00003160
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Alvord, TX (+ 0 °F mean)
Instrument codes from this station's NOAA 1991–2020 normals, mean temperature, corpus warmth rank, photo-finish peer station, precipitation band, seasonal swing, comfort composite, degree-day load, and field book, not a livability rating.
Mean-temperature neighbourhood
Nationwide NOAA normal poles and nearest peers, not a reprint of every NV station list.
- Mercury Desert… (this station) 64°F
- Hot Ash Mtn, CA 64°F
- Near Alvord, TX 64°F
- Near Andrews, SC 64°F
- Near Arkansas Post, AR 64°F
Climate Living Index · Mercury Desert Rock
Mercury Desert Rock: 58/100 · grade C
Mercury Desert Rock publishes all six Living Index dimensions from NOAA annual/seasonal normals · NOAA daily multivariate normals · NOAA hourly normals.
PlainClimate-derived for Mercury Desert Rock, not an official NOAA rating. Rankings still use Comfort Score 77/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Annual temperature balance | 63.5°F · 4.0° from 67.5°F | 88/100 · A |
| Frost-free season | 246 days/year | 87/100 · A |
| Snowfall burden | 1.0 inches/year | 83/100 · B |
| Normal heat + freeze calendar | 126 calendar days | 61/100 · C |
| Summer moisture balance | 36.7°F mean dew point | 21/100 · F |
| Precipitation balance | 5.2 in · 29.8 from 35 in | 2/100 · F |
Mercury Desert Rock · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Mercury Desert Rock's normals sit in a dry climate class: BWk
Annual precipitation falls well below the aridity threshold for this temperature regime, so the normals classify as cold desert (BWk). Class BWk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold desert.
- Köppen code
- BWk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 86.0°F
- Coldest month
- 43.6°F
Source: official public datasets monthly normals (1991–2020) at the city’s primary station. This is a station classification, not a mapped regional consensus.
National standing · balanced station
Where Mercury Desert Rock sits across the climate record
Three NOAA fields for Mercury Desert Rock's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 16% warmest
- Among 6,861 stations, Mercury Desert Rock sits in the warmer third of annual means.
- Annual precipitation
- Drier than 99%
- Mercury Desert Rock's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- 46th percentile swing
- Typical seasonal amplitude versus 6,861 complete station-years.
How Mercury Desert Rock compares across U.S. station-mapped locations
Mercury Desert Rock's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
77 Top 30% score exceeds 70% of 6,189 station-mapped location scores
- 0–10: 0 station-mapped locations (0%). Below this entry.
- 10–20: 0 station-mapped locations (0%). Below this entry.
- 20–30: 96 station-mapped locations (2%). Below this entry.
- 30–40: 280 station-mapped locations (5%). Below this entry.
- 40–50: 1,113 station-mapped locations (18%). Below this entry.
- 50–60: 1,329 station-mapped locations (21%). Below this entry.
- 60–70: 1,236 station-mapped locations (20%). Below this entry.
- 70–80: 650 station-mapped locations (11%). This entry sits in this band.
- 80–90: 921 station-mapped locations (15%). Above this entry.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Mercury Desert Rock's measured station temperature trend
MethodologyAcross 42 complete annual observations from 1979 to 2025, MERCURY DESERT ROCK AP warmed at a fitted rate of 0.33°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Mercury Desert Rock primary station fitted change +0.33 °C/decade
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 57°F (14°C) | 33°F (1°C) | 45°F (7°C) | 0.7" | 0.3" | 13.3 | 0.0 |
| February | 60°F (16°C) | 36°F (2°C) | 48°F (9°C) | 0.9" | 0.2" | 8.1 | 0.0 |
| March | 67°F (20°C) | 41°F (5°C) | 54°F (12°C) | 0.6" | 0.2" | 3.0 | 0.0 |
| April | 74°F (23°C) | 47°F (8°C) | 60°F (16°C) | 0.4" | 0.1" | 0.4 | 1.1 |
| May | 84°F (29°C) | 55°F (13°C) | 70°F (21°C) | 0.2" | 0.0" | 0.0 | 9.2 |
| June | 95°F (35°C) | 64°F (18°C) | 80°F (26°C) | 0.1" | 0.0" | 0.0 | 23.0 |
| July | 101°F (38°C) | 71°F (22°C) | 86°F (30°C) | 0.3" | 0.0" | 0.0 | 30.1 |
| August | 99°F (37°C) | 70°F (21°C) | 84°F (29°C) | 0.4" | 0.0" | 0.0 | 29.6 |
| September | 91°F (33°C) | 62°F (16°C) | 76°F (25°C) | 0.4" | 0.0" | 0.0 | 19.8 |
| October | 78°F (26°C) | 50°F (10°C) | 64°F (18°C) | 0.4" | 0.0" | 0.2 | 2.8 |
| November | 65°F (18°C) | 39°F (4°C) | 52°F (11°C) | 0.3" | 0.0" | 5.3 | 0.0 |
| December | 55°F (13°C) | 32°F (0°C) | 44°F (6°C) | 0.6" | 0.2" | 16.4 | 0.0 |
The year, day by day
Mercury Desert Rock works both ends of the calendar. Normal highs climb to 101°F by July 17 and hold at or above 90°F on 110 dates, then normal lows drop to freezing or below on 16 dates, bottoming at 32°F around December 17.
When the heat sits
Normal highs reach 90°F from June 2 through September 19, covering 110 dates. The broader mild season, normal highs of 70°F or more, runs March 26 to November 3.
This counts calendar dates whose 1991–2020 normal high reaches 90°F. It is a smaller number than the 90°F+ day counts in the monthly table above, which measure how often the threshold was actually crossed in a typical year. A date can average 88°F and still exceed 90°F in half of all years.
The freezing stretch
Freezing normal lows set in around December 11, covering 16 dates.
Derived from the normal daily minimum. This is a different measure from the 50%-probability frost dates shown elsewhere on this page, which come from NOAA’s frost product.
Where the wet dates fall
The likeliest wet date is February 15, when 15% of years recorded at least a hundredth of an inch. The driest is June 20 at 3%. Summed across the calendar, that is about 31 wet dates a year.
The widest day
June 14 carries the biggest normal gap between afternoon and dawn, 31°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Mercury Desert Rock.
Where Mercury Desert Rock Stands Nationally
Summers here run among the most heat-heavy normals calendars in the country: on about 110 days a year the normal daily high itself reaches 90°F — a count fewer than one station in ten exceeds.
Aridity defines the water calendar: about 5 inches in a normal year lands this among the driest tenth of ranked stations.
Mercury Desert Rock earns 2 nationally notable standings (outer quintiles) against 6,860 NOAA 1991–2020 normals stations; only those extremes render.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 0.3"
4.2 days with precipitation
Snow: 0.2"
4.5 days with precipitation
Snow: 0.2"
3.6 days with precipitation
Snow: 0.1"
2.6 days with precipitation
2.1 days with precipitation
0.9 days with precipitation
2.1 days with precipitation
1.6 days with precipitation
1.7 days with precipitation
2.1 days with precipitation
2.2 days with precipitation
Snow: 0.2"
3.2 days with precipitation
Mercury Desert Rock's wet season runs through the cold months
December, January and February carry 43% of the year's precipitation here, while June through August contribute 16%. That is the cool-season-dominant pattern of the West Coast and the higher inland West, where storm tracks swing south in winter and summer turns dry; the thermometer meanwhile shows a 42.4°F seasonal spread.
- Wettest month
- February, 0.9"
- Driest month
- June, 0.1"
- Wettest three months
- February, January, December (43% of the year)
Shares are computed from this station's own 1991-2020 monthly precipitation normals. A cool-season label means the December-February share reaches 35%. Where snow falls, the monthly figures above report liquid-equivalent precipitation, so a wet winter month is not necessarily a rainy one.
Mercury Desert Rock is dry, and what does fall arrives gently
Only about 31 days a year record measurable precipitation here, 8% of the calendar, and they carry 5.2" between them. At roughly 0.17 inches on an average wet day, this is not the damp drizzle of a marine climate; it is an arid record in which precipitation is both uncommon and light when it appears.
The wettest month by count is February at about 5 wet days; the driest is June at about 1.
A low per-event average in a dry record is a statement about typical days only. Arid regions can still take a large share of a year's total from a single convective storm, which a normal cannot show.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, not the extremes within it.
Snow reaches Mercury Desert Rock, but rarely amounts to much
The normals record 1.0 inches of snow a year here, most likely in January. That is a real but marginal amount: enough that snow is part of the local record, not enough to define the winter.
A figure in this range usually reflects a handful of events that melt quickly rather than a season of accumulation; about 1 days a year record any measurable snow at all.
NOAA 1991-2020 normals. An average across thirty years can smooth away a single heavy winter, so a small annual figure does not mean a significant snowfall is impossible.
Frost Dates & Growing Season
First Fall Freeze
November 17
50% probability date
Last Spring Freeze
March 16
50% probability date
Growing Season
246 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
2,842
Higher = more heating needed
Cooling Degree Days
2,331
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Humidity & Wind
Monthly averages from hourly observations
| Month | Humidity | Wind (mph) | Clear Sky % | Overcast % |
|---|---|---|---|---|
| January | 40% | 8.1 | 65% | 16% |
| February | 38% | 9.1 | 64% | 16% |
| March | 28% | 9.8 | 69% | 10% |
| April | 22% | 10.1 | 72% | 8% |
| May | 19% | 9.8 | 76% | 5% |
| June | 15% | 9.7 | 85% | 2% |
| July | 19% | 8.8 | 79% | 2% |
| August | 21% | 8.3 | 80% | 3% |
| September | 21% | 7.8 | 84% | 2% |
| October | 29% | 7.8 | 77% | 7% |
| November | 36% | 8.0 | 73% | 11% |
| December | 40% | 7.8 | 63% | 18% |
Nationwide similar cities
Other rankable U.S. places outside NV closest to Mercury Desert Rock on two NOAA annual-normal axes (mean temperature and annual precipitation). Chip rows use distinct link sets.
Closest by average temperature
Nearest out-of-state peers by annual mean temperature (64°F here).
- Alvord, TX 64°F · 0.0°F off
- Andrews, SC 64°F · 0.0°F off
- Bonham, TX 64°F · 0.0°F off
- Hemingway, SC 64°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (5.2" here), excluding temperature-peer places.
- Palm Springs, CA 5.1" · 0.1" off
- Bullhead City, AZ 5.4" · 0.2" off
- Independence, CA 5.4" · 0.2" off
- Barstow, CA 5.0" · 0.3" off
Scarce-water calendar
Where Mercury Desert Rock's limited precipitation lands
mixed demand · dry · mid swing
Local precipitation is sparse in this otherwise mixed profile. The station reports 5.2 inches annually, within PlainClimate's dry band. Annual snowfall totals 1.0 inches. The monthly distribution matters because the total alone does not reveal the timing.
July and December mark the typical warm and cold ends of the calendar in Mercury Desert Rock's middle-range seasonal profile. The measured spread is 42.4°F. The annual average is 64°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Heating and cooling both register in Mercury Desert Rock's normal, at 2,842 and 2,331 degree days respectively. Neither total exceeds the other by more than two to one, so the record is better read as a mixed-demand calendar than as heating-led or cooling-led.
Mercury Desert Rock has a long frost-free window of roughly 246 days, but the dry annual profile is a separate constraint. Growing-season length says when freezes are unlikely, not whether rainfall is sufficient.
Mercury Desert Rock wettest normal
February
February concentrates the scarce annual total (5.2 inches).
Mercury Desert Rock driest normal
June
June is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Mercury Desert Rock's climate
How dry is Mercury Desert Rock? ▼
How many days above 90°F does Mercury Desert Rock get? ▼
How much energy does heating and cooling require in Mercury Desert Rock? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Mercury Desert Rock's primary station: MERCURY DESERT ROCK AP (USW00003160). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The conservative exact name-and-state crosswalk finds no Census place match, so PlainClimate treats this as a station-mapped location and does not claim it is a municipality. No exact Gazetteer row for Mercury Desert Rock; facility counts that depend on place identity are therefore an upper bound, not a municipal census.
On this page every temperature, precipitation, and derived score for Mercury Desert Rock comes from its primary NOAA station record. No figure on this page is typed in by an editor - each value is rendered from NOAA 1991-2020 U.S. Climate Normals. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 1991–2020 normals.