Arthur (4 mi NW), Nevada climate: Climate normals at a NOAA weather station
Arthur (4 mi NW)'s normal year runs from 16°F December nights to 84°F July afternoons, with 14.1 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 7.1°C, December lows of −9°C, July highs of 29°C, 357 mm of precipitation a year.
- NOAA stationArthur (4 mi NW)
- Station IDUSC00260438
- Location40.78°N 115.19°W
- Elevation6,250 ft (1,905 m)
On October 22, the normal high in Arthur (4 mi NW) is 58°F and the normal low 30°F, and the chance of measurable rain or snow is 12%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Arthur (4 mi NW).
- Jan 36° 16°
- Feb 39° 19°
- Mar 48° 25°
- Apr 55° 30°
- May 64° 37°
- Jun 74° 43°
- Jul 84° 50°
- Aug 83° 48°
- Sep 74° 41°
- Oct 61° 32°
- Nov 46° 22°
- Dec 35° 16°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like at Arthur (4 mi NW) each month?
July is the warmest month, with normal highs of 84°F; December the coldest, with normal lows of 16°F. The most precipitation falls in December (1.75 in), the least in July (0.50 in).
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 36°F | 16°F | 26.1°F | 1.70 | 7 | <1 | 31 | 9 h 30 min |
| February | 39°F | 19°F | 28.6°F | 1.27 | 6 | <1 | 27 | 10 h 40 min |
| March | 48°F | 25°F | 36.2°F | 1.09 | 6 | <1 | 27 | 11 h 50 min |
| April | 55°F | 30°F | 42.0°F | 1.36 | 7 | <1 | 21 | 13 h 20 min |
| May | 64°F | 37°F | 50.3°F | 1.49 | 6 | <1 | 9 | 14 h 30 min |
| June | 74°F | 43°F | 58.5°F | 0.97 | 5 | 1 | 2 | 15 h |
| July | 84°F | 50°F | 67.2°F | 0.50 | 3 | 5 | <1 | 14 h 50 min |
| August | 83°F | 48°F | 65.7°F | 0.52 | 3 | 3 | <1 | 13 h 50 min |
| September | 74°F | 41°F | 57.4°F | 0.80 | 3 | <1 | 4 | 12 h 30 min |
| October | 61°F | 32°F | 46.3°F | 1.18 | 4 | <1 | 17 | 11 h 10 min |
| November | 46°F | 22°F | 34.4°F | 1.42 | 5 | <1 | 27 | 10 h |
| December | 35°F | 16°F | 25.3°F | 1.75 | 6 | <1 | 30 | 9 h 20 min |
| Year (annual) | 58°F | 32°F | 44.8°F | 14.05 | 59 | 9 | 196 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 2°C | −9°C | −3.3°C | 43 mm |
| February | 4°C | −7°C | −1.9°C | 32 mm |
| March | 9°C | −4°C | 2.3°C | 28 mm |
| April | 13°C | −1°C | 5.6°C | 35 mm |
| May | 18°C | 3°C | 10.2°C | 38 mm |
| June | 23°C | 6°C | 14.7°C | 25 mm |
| July | 29°C | 10°C | 19.6°C | 13 mm |
| August | 28°C | 9°C | 18.7°C | 13 mm |
| September | 23°C | 5°C | 14.1°C | 20 mm |
| October | 16°C | 0°C | 7.9°C | 30 mm |
| November | 8°C | −5°C | 1.3°C | 36 mm |
| December | 2°C | −9°C | −3.7°C | 44 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. The nearest record that keeps one, Lamoille (16 miles away), gets 84 inches of snow in a normal year; elevation and distance can change that.
Source: NOAA NCEI 1991-2020 monthly normals, station USC00260438; 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.
Which months are mildest at Arthur (4 mi NW)?
Normal highs sit between 65°F and 85°F in June, July, August and September. Of those, July 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 USC00260438.
When is the last frost at Arthur (4 mi NW)?
In Arthur (4 mi NW), the last spring frost (32°F) comes after June 4 in half of years and after June 20 in one year in ten; the first autumn frost comes before September 18 in half of years and before August 31 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
- June 41 year in 10 after June 20; 9 in 10 after May 16
- First autumn frost, half of years before
- September 181 year in 10 before August 31; 9 in 10 before October 2
NOAA puts the median frost-free season at 105 days, and the season without a hard freeze (28°F) at 133 days.
A hard freeze (28°F) comes after May 18 in half of springs and before September 29 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Arthur (4 mi NW) in zone 6a in ZIP code 89828, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, the station is in zone 6a: the coldest night of a typical year reaches −10°F (18 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 USC00260438; 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 at Arthur (4 mi NW)?
In a normal year in Arthur (4 mi NW), 9 days a year reach 90°F, 196 nights fall to 32°F or colder and 59 days bring measurable precipitation.
- Days at 90°F or more
- 9a normal year
- Days at 100°F or more
- fewer than 1a normal year
- Nights at 32°F or colder
- 196a normal year
- Days that stay below freezing
- 34high of 32°F or less
- Days with 0.01 inch of precipitation
- 59a normal year
The highest temperature in this station's record (since 1925) is 99°F, on July 31, 2000; the lowest is −26°F, on December 23, 1990.
The wettest calendar year on that record is 1983, with 27.10 in; the snowiest season is 1948–49, with 128.0 inches.
Source: NOAA NCEI 1991-2020 annual normals, station USC00260438; records: ACIS (NOAA Regional Climate Centers), station USC00260438. Records use complete months only; a month missing more than three days is left out.
How sunny is it at Arthur (4 mi NW)?
Over a year 80% of the sunlight that would reach the ground under clear skies gets through the clouds at Arthur (4 mi NW), 4.8 kWh per square metre a day. August is the sunniest month (89%) and December the cloudiest (65%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 2.2 |
| February | 72% | 3.1 |
| March | 72% | 4.3 |
| April | 73% | 5.5 |
| May | 78% | 6.7 |
| June | 87% | 7.9 |
| July | 88% | 7.5 |
| August | 89% | 6.8 |
| September | 88% | 5.6 |
| October | 84% | 4.0 |
| November | 75% | 2.5 |
| December | 65% | 1.8 |
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 many heating and cooling degree days does Arthur (4 mi NW) record?
A normal year at Arthur (4 mi NW) brings 7,522 heating degree days, 40% more than the median U.S. place (5,373), and 197 cooling degree days, 78% fewer than the median (908). Eight months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 1,704 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 1,206 | 0 |
| February | 1,021 | 0 |
| March | 894 | 0 |
| April | 690 | 0 |
| May | 455 | 1 |
| June | 208 | 15 |
| July | 35 | 103 |
| August | 50 | 72 |
| September | 235 | 7 |
| October | 581 | 0 |
| November | 918 | 0 |
| December | 1,229 | 0 |
| Year (annual) | 7,522 | 197 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00260438. 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.
Have recent years at Arthur (4 mi NW) been warmer than normal?
2025 averaged 47.5°F, 2.7°F above the 1991-2020 normal of 44.8°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 45.9°F | +1.1°F | 11.31 |
| 2022 | 44.5°F | −0.3°F | 15.40 |
| 2023 | 42.2°F | −2.6°F | 15.73 |
| 2024 | 46.3°F | +1.5°F | 11.35 |
| 2025 | 47.5°F | +2.7°F | 11.68 |
Over 36 complete years from 1965 to 2025, the station's annual mean temperature rose at a fitted 3.8°F per century (+0.21°C per decade). A fitted rate summarizes the whole record; single years swing well above and below it.
Source: observed years: ACIS, station USC00260438; trend: NOAA GHCN-Monthly v4. A year counts only with all twelve months complete.
How does Arthur (4 mi NW)'s climate compare?
Arthur (4 mi NW) is warmer than 3 of the 55 places with their own NOAA record in Nevada, and wetter than 48. Across the 7,247 U.S. stations with normals, its annual mean of 44.8°F is warmer than 18%.
In the Köppen classification computed from these normals, Arthur (4 mi NW) is Dsb: continental, dry-summer, warm 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.
Questions about Arthur (4 mi NW)'s climate
What is the coldest month at Arthur (4 mi NW)?
December, with a normal high of 35°F and a normal low of 16°F. The warmest is July (84°F by day, 50°F at night).
Does it snow at Arthur (4 mi NW)?
Yes. NOAA publishes no 1991-2020 snowfall normal for the station; the nearest record that keeps one, Lamoille (16 miles away), records 84 inches of snow in a normal year.
What is the rainiest month at Arthur (4 mi NW)?
December, with 1.75 in of precipitation in a normal year; the driest is July with 0.50 in.
What plant hardiness zone is Arthur (4 mi NW) in?
The USDA's 2023 map puts Arthur (4 mi NW) in zone 6a in ZIP code 89828, the nearest ZIP area. By the same method at the station, the coldest night of a typical year reaches −10°F (18 years, 1991-2020): zone 6a.
How late can frost come at Arthur (4 mi NW)?
In half of years the last 32°F night comes after June 4; in one year in ten it comes after June 20. Waiting until June 20 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Nevada climateThe statewide normals and every place in the state
- Clover Valley, NV13 miles from this station, 46.1°F a year
- Lamoille, NV16 miles from this station, 41.8°F a year
- Deeth, NV21 miles from this station, 43.9°F a year
- Wells, NV25 miles from this station, 44.8°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made