Jerome, AZ Climate: Temperature & Rain by Month
Temperature and precipitation from NOAA NCEI 1991–2020 normals →, plus PlainClimate's derived comfort score
30-year climate normals (1991-2020) from Jerome's primary NOAA station, JEROME.
The climate verdict for Jerome
Dryness leads the climate profile for Jerome, Arizona, with 17.7 inches of precipitation a year. NOAA records an annual average of 60°F. It scores 82/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 81% of them.
- 60°F
- annual average temperature (NOAA normal)
- 82/100
- comfort score, above 81% of station-mapped location scores
- 17.7"
- annual precipitation · 6" snow
- 244 days
- frost-free days per growing season
Jerome: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00024453 · Jerome, AZ 60°F mean · 17.7" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-DRY · SWING-MID · COMF-TOP · LOAD-HEAT · STN-1 · BOOK-FULL
- TEMP-MILD 60°F
- RANK-UPPER #5,146
- PHOTO-FINISH ≈ Murfreesboro
- PRCP-DRY 17.7"
- SWING-MID 38°F
- COMF-TOP 82/100
- LOAD-HEAT 3,391 HDD
- STN-1 USC00024453
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Murfreesboro, AR (+ 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 AZ station list.
- Jerome (this station) 60°F
- Cold Clayton Wtp, NC 60°F
- Hot Norfolk S, VA 60°F
- Near Murfreesboro, AR 60°F
- Near Booneville, MS 60°F
Climate Living Index · Jerome
Jerome: 75/100 · grade B
Jerome publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Jerome, not an official NOAA rating. Rankings still use Comfort Score 82/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Normal heat + freeze calendar | 42 calendar days | 93/100 · A |
| Frost-free season | 244 days/year | 86/100 · A |
| Annual temperature balance | 60.1°F · 7.4° from 67.5°F | 77/100 · B |
| Snowfall burden | 6.3 inches/year | 69/100 · C |
| Precipitation balance | 17.7 in · 17.3 from 35 in | 38/100 · F |
Jerome · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Jerome's normals sit in a dry climate class: BSk
Precipitation is low relative to temperature but above true desert thresholds: cold semi-arid steppe (BSk). Class BSk is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically cold semi-arid steppe.
- Köppen code
- BSk
- Group
- Dry (arid or semi-arid)
- Warmest month
- 79.9°F
- Coldest month
- 41.5°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 · heating-led station
Where Jerome sits across the climate record
Three NOAA fields for Jerome's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 25% warmest
- Among 6,861 stations, Jerome sits in the warmer third of annual means.
- Annual precipitation
- Drier than 76%
- Jerome's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 71%
- Warmest-to-coldest month gap for Jerome is compact versus 6,861 complete station-years.
How Jerome compares across U.S. station-mapped locations
Jerome's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
82 Top 19% score exceeds 81% 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%). Below this entry.
- 80–90: 921 station-mapped locations (15%). This entry sits in this band.
- 90–100: 564 station-mapped locations (9%). Above this entry.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Jerome's measured station temperature trend
MethodologyAcross 65 complete annual observations from 1898 to 2021, JEROME warmed at a fitted rate of 0.15°C per decade. The line shows the fitted change relative to its first year, not raw year-to-year temperatures or a forecast.
- Jerome primary station fitted change +0.15 °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 | 50°F (10°C) | 35°F (1°C) | 42°F (6°C) | 1.8" | 1.7" | 9.8 | 0.0 |
| February | 53°F (12°C) | 36°F (2°C) | 45°F (7°C) | 1.8" | 1.0" | 7.4 | 0.0 |
| March | 61°F (16°C) | 41°F (5°C) | 51°F (10°C) | 1.7" | 1.4" | 3.8 | 0.0 |
| April | 68°F (20°C) | 46°F (8°C) | 57°F (14°C) | 0.7" | 1.4" | 1.3 | 0.0 |
| May | 78°F (25°C) | 55°F (13°C) | 66°F (19°C) | 0.5" | 0.0" | 0.0 | 2.0 |
| June | 89°F (32°C) | 66°F (19°C) | 77°F (25°C) | 0.3" | 0.0" | 0.0 | 16.1 |
| July | 91°F (33°C) | 69°F (20°C) | 80°F (27°C) | 2.4" | 0.0" | 0.0 | 20.6 |
| August | 88°F (31°C) | 67°F (19°C) | 77°F (25°C) | 3.0" | 0.0" | 0.0 | 13.8 |
| September | 82°F (28°C) | 62°F (17°C) | 72°F (22°C) | 1.6" | 0.0" | 0.0 | 2.7 |
| October | 71°F (22°C) | 53°F (12°C) | 62°F (17°C) | 1.3" | 0.0" | 0.5 | 0.0 |
| November | 59°F (15°C) | 42°F (6°C) | 50°F (10°C) | 0.9" | 0.1" | 3.2 | 0.0 |
| December | 49°F (9°C) | 34°F (1°C) | 42°F (5°C) | 1.7" | 0.7" | 10.3 | 0.0 |
The year, day by day
The year in Jerome runs from a mild 33°F around December 20 to 92°F at the peak near July 3, and the normal low never reaches freezing on any date in the record.
When the heat sits
Normal highs reach 90°F from June 18 through July 29, covering 42 dates. The broader mild season, normal highs of 70°F or more, runs April 24 to October 19.
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.
No freezing date
Not one calendar date in the 1991–2020 record carries a normal low at or below 32°F. The coldest normal low of the year is 33°F around December 20.
Where the wet dates fall
The likeliest wet date is August 5, when 35% of years recorded at least a hundredth of an inch. The driest is June 7 at 7%. Summed across the calendar, that is about 64 wet dates a year.
The widest day
June 15 carries the biggest normal gap between afternoon and dawn, 24°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Jerome.
Monthly Precipitation
Average monthly rainfall and snowfall
Snow: 1.7"
5.6 days with precipitation
Snow: 1.0"
6.1 days with precipitation
Snow: 1.4"
5.7 days with precipitation
Snow: 1.4"
3.5 days with precipitation
3.4 days with precipitation
1.8 days with precipitation
9.0 days with precipitation
10.9 days with precipitation
5.6 days with precipitation
3.8 days with precipitation
Snow: 0.1"
3.6 days with precipitation
Snow: 0.7"
4.8 days with precipitation
Jerome spreads its precipitation across the year
Neither half of the year dominates here: June through August take 32% of the annual total and December through February 30%, with neither reaching the 35% that would mark a distinct wet season. Jerome has no dry season to plan around, though it does carry a 38.4°F seasonal spread.
The gap between the wettest and driest month still matters: August averages 3.0" and June 0.3". The three wettest months together take 41% of the year, against the 25% a perfectly flat distribution would give them.
Shares are computed from this station's own 1991-2020 monthly precipitation normals. "Spread across the year" means neither the June-August nor the December-February share reaches 35%; it describes an average year, not the variability of any single one.
How Jerome's precipitation splits across the calendar
About 64 days a year record measurable precipitation here, carrying 17.7" between them, or roughly 0.28 inches on a typical wet day. That sits in the middle band: neither the many-light-days pattern of the Pacific Northwest and the Great Lakes, nor the few-heavy-events pattern of the Gulf and the desert Southwest.
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year and say nothing about the heaviest single storm on record.
Snow reaches Jerome, but rarely amounts to much
The normals record 6.3 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 3 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 25
50% probability date
Last Spring Freeze
March 26
50% probability date
Growing Season
244 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
3,391
Higher = more heating needed
Cooling Degree Days
1,639
Higher = more cooling needed
Warmest Month
July
Coldest Month
December
Nationwide similar cities
Other rankable U.S. places outside AZ closest to Jerome 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 (60°F here).
- Anadarko, OK 60°F · 0.0°F off
- Apex, NC 60°F · 0.0°F off
- Calistoga, CA 60°F · 0.0°F off
- Catawba, NC 60°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (17.7" here), excluding temperature-peer places.
- Dumas, TX 17.7" · 0.0" off
- Mccarthy, AK 17.7" · 0.0" off
- Afton, WY 17.7" · 0.0" off
- Hartley, TX 17.7" · 0.0" off
Data-derived climate profile
How Jerome's climate pattern fits together
heating led · dry · mid swing
Jerome's energy balance leans toward cold weather: 3,391 annual heating degree days against 1,639 for cooling. Its 38.4°F seasonal range still makes the monthly rows more useful than the annual average alone.
Jerome has a long frost-free window of roughly 244 days, but the dry annual profile is a separate constraint. Growing-season length says when freezes are unlikely, not whether rainfall is sufficient.
July and December mark the typical warm and cold ends of the calendar in Jerome's middle-range seasonal profile. The measured spread is 38.4°F. The annual average is 60°F. Neither the annual mean nor one extreme month represents the full calendar on its own.
Jerome's cold-season load does not imply a wet climate. Annual precipitation is 17.7 inches, which places the station in PlainClimate's dry range. Annual snowfall totals 6.3 inches. The snowfall and rainfall fields should be read separately rather than inferred from temperature.
These labels group NOAA 1991-2020 normals from Jerome's primary station, so the winter figures are a thirty-year average and not a floor: a single hard season can run well below them. Treat each band as a descriptive range for Jerome, not an official NOAA class or a year-ahead forecast.
Questions about Jerome's climate
How much rain does Jerome get? ▼
How many days above 90°F does Jerome get? ▼
How much energy does heating and cooling require in Jerome? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Jerome's primary station: JEROME (USC00024453). For informational purposes only.
Place identity: U.S. Census Bureau 2024 Gazetteer places. The 2024 Census Gazetteer identifies the exact name-and-state match as an incorporated place (GEOID 0436290). Match rule for Jerome: exact normalized name + state only, no fuzzy expansion, so nearby differently spelled facilities stay unmatched.
On this page every temperature, precipitation, and derived score for Jerome 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.