Tustin Irvine Rch, CA Climate: Temperature & Rain by Month
Explore NOAA NCEI's 1991–2020 climate normals → and a clearly labeled PlainClimate comfort calculation
30-year climate normals (1991-2020) from Tustin Irvine Rch's primary NOAA station, TUSTIN IRVINE RCH.
The climate verdict for Tustin Irvine Rch
Dryness leads the climate profile for Tustin Irvine Rch, California, with 14.1 inches of precipitation a year. NOAA records an annual average of 65°F. It scores 90/100 for climate comfort (excellent), putting it in the top third of station-mapped location scores and exceeding 91% of them.
- 65°F
- annual average temperature (NOAA normal)
- 90/100
- comfort score, above 91% of station-mapped location scores
- 14.1"
- precipitation, annual total
- 354 days
- growing season, frost-free days
Tustin Irvine Rch: NOAA 1991-2020 normals describe a typical year, not a forecast. Method: /methodology.
Normals record plate
Sheet USC00049087 · Tustin Irvine Rch, CA 65°F mean · 14.1" precip
TEMP-MILD · RANK-UPPER · PHOTO-FINISH · PRCP-DRY · SWING-NARROW · COMF-TOP · LOAD-MIX · STN-1 · BOOK-FULL
- TEMP-MILD 65°F
- RANK-UPPER #5,969
- PHOTO-FINISH ≈ Big Spring
- PRCP-DRY 14.1"
- SWING-NARROW 20°F
- COMF-TOP 90/100
- LOAD-MIX H/C balanced
- STN-1 USC00049087
- BOOK-FULL 6/6 fields
Nearest mean-temperature peer: Big Spring, 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 CA station list.
- Tustin Irvine R… (this station) 65°F
- Hot Columbus, NM 65°F
- Near Big Spring, TX 65°F
- Near Camden, AL 65°F
- Near Cape Hatteras, NC 65°F
Climate Living Index · Tustin Irvine Rch
Tustin Irvine Rch: 83/100 · grade B
Tustin Irvine Rch publishes 5 of 6 Living Index dimensions (NOAA annual/seasonal normals · NOAA daily multivariate normals); 1 missing weight rescale to 100.
PlainClimate-derived for Tustin Irvine Rch, not an official NOAA rating. Rankings still use Comfort Score 90/100 (separate formula). Breakpoints and limits.
| Dimension | Station value | Score |
|---|---|---|
| Frost-free season | 354 days/year | 100/100 · A |
| Normal heat + freeze calendar | 0 calendar days | 100/100 · A |
| Annual temperature balance | 64.8°F · 2.7° from 67.5°F | 92/100 · A |
| Snowfall burden | 0.0 inches/year | 90/100 · A |
| Precipitation balance | 14.1 in · 20.9 from 35 in | 25/100 · F |
Tustin Irvine Rch · 2026-08-04 · NOAA NCEI Climate Normals · method · Comfort Score method.
Tustin Irvine Rch's normals sit in a dry climate class: BSh
Precipitation is low relative to temperature but above true desert thresholds: hot semi-arid steppe (BSh). Class BSh is the Peel et al. (2007) label for this station's monthly mean temperature and precipitation normals: dry (arid or semi-arid), specifically hot semi-arid steppe.
- Köppen code
- BSh
- Group
- Dry (arid or semi-arid)
- Warmest month
- 75.2°F
- Coldest month
- 55.6°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 Tustin Irvine Rch sits across the climate record
Three NOAA fields for Tustin Irvine Rch's primary station, temperature, precipitation, and seasonal swing, are ranked against every station-mapped normal that carries the same field.
- Annual temperature
- Top 13% warmest
- Among 6,861 stations, Tustin Irvine Rch sits in the warmer third of annual means.
- Annual precipitation
- Drier than 85%
- Tustin Irvine Rch's annual total ranks in the drier third of 6,352 measured normals.
- Seasonal temperature swing
- Narrower than 97%
- Warmest-to-coldest month gap for Tustin Irvine Rch is compact versus 6,861 complete station-years.
How Tustin Irvine Rch compares across U.S. station-mapped locations
Tustin Irvine Rch's comfort score vs. all station-mapped locations
PlainClimate composite comfort index (1–100), NOAA 1991–2020 normals
90 Top 9% score exceeds 91% 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%). Below this entry.
- 90–100: 564 station-mapped locations (9%). This entry sits in this band.
Source NOAA U.S. Climate Normals, PlainClimate comfort index · 1991–2020
Monthly Temperatures
Average daily high and low temperatures by month
| Month | Avg High | Avg Low | Mean | Precip | Snow | Freeze Days | 90°F+ Days |
|---|---|---|---|---|---|---|---|
| January | 68°F (20°C) | 43°F (6°C) | 56°F (13°C) | 3.1" | 0.0" | 0.5 | 0.1 |
| February | 69°F (21°C) | 45°F (7°C) | 57°F (14°C) | 3.4" | 0.0" | 0.0 | 0.1 |
| March | 72°F (22°C) | 48°F (9°C) | 60°F (15°C) | 2.1" | 0.0" | 0.0 | 0.5 |
| April | 74°F (23°C) | 50°F (10°C) | 62°F (17°C) | 0.8" | 0.0" | 0.0 | 1.4 |
| May | 77°F (25°C) | 55°F (13°C) | 66°F (19°C) | 0.3" | 0.0" | 0.0 | 0.9 |
| June | 80°F (26°C) | 58°F (15°C) | 69°F (21°C) | 0.1" | 0.0" | 0.0 | 1.3 |
| July | 85°F (30°C) | 61°F (16°C) | 73°F (23°C) | 0.0" | 0.0" | 0.0 | 4.4 |
| August | 87°F (31°C) | 63°F (17°C) | 75°F (24°C) | 0.0" | 0.0" | 0.0 | 10.8 |
| September | 87°F (30°C) | 61°F (16°C) | 74°F (23°C) | 0.2" | 0.0" | 0.0 | 9.1 |
| October | 84°F (29°C) | 55°F (13°C) | 69°F (21°C) | 0.7" | 0.0" | 0.0 | 5.0 |
| November | 76°F (24°C) | 47°F (8°C) | 62°F (16°C) | 1.2" | 0.0" | 0.6 | 1.1 |
| December | 70°F (21°C) | 43°F (6°C) | 56°F (13°C) | 2.3" | 0.0" | 0.8 | 0.0 |
The year, day by day
The calendar barely moves in Tustin Irvine Rch: no date carries a normal high of 90°F or a normal low at freezing. The year runs between 43°F near December 14 and 87°F near August 14.
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 43°F around December 14.
Where the wet dates fall
The likeliest wet date is February 17, when 23% of years recorded at least a hundredth of an inch. The driest is August 4 at 0%. Summed across the calendar, that is about 32 wet dates a year.
The widest day
October 21 carries the biggest normal gap between afternoon and dawn, 29°F between the normal high and the normal low.
Look up any date
Any date's 1991–2020 normal for Tustin Irvine Rch.
Where Tustin Irvine Rch Stands Nationally
A drier-than-most normal water year — around 14 inches, below what four out of five ranked stations collect.
Tustin Irvine Rch earns one nationally notable standing (outer quintile) against 6,860 NOAA 1991–2020 normals stations, middle-of-the-pack metrics stay silent here.
Monthly Precipitation
Average monthly rainfall and snowfall
6.2 days with precipitation
6.6 days with precipitation
4.8 days with precipitation
2.5 days with precipitation
1.6 days with precipitation
0.4 days with precipitation
0.3 days with precipitation
0.1 days with precipitation
0.4 days with precipitation
1.7 days with precipitation
2.5 days with precipitation
4.7 days with precipitation
Tustin Irvine Rch's wet season runs through the cold months
December, January and February carry 62% of the year's precipitation here, while June through August contribute 1%. 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 an unusually narrow 19.6°F seasonal spread.
- Wettest month
- February, 3.4"
- Driest month
- August, 0.0"
- Wettest three months
- February, January, December (62% 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.
When it rains in Tustin Irvine Rch, it arrives in quantity
14.1" of precipitation falls across only about 32 wet days here, averaging 0.44 inches each. Fewer days carry more water: the year's total is delivered in comparatively heavy events rather than persistent damp.
- Days with measurable precipitation
- about 32 a year, 9% of all days
- Average depth per wet day
- 0.44 inches
- Most wet days
- February, about 7
- Fewest wet days
- August, about 0
A wet day is one recording at least 0.01 inches. These are 1991-2020 normals: they describe an average year, and a per-day average is not a forecast of any individual storm.
Tustin Irvine Rch's record shows no measurable snowfall
This station measured snowfall across the 1991-2020 period and recorded none: the annual normal is 0.0 inches. That is a measured zero rather than missing data, which is a meaningful distinction here , most stations in the database simply do not report snow at all, and those pages say nothing about it.
A thirty-year normal of zero describes the typical year at this station. It is not a claim that snow has never fallen in the area.
Frost Dates & Growing Season
First Fall Freeze
December 25
50% probability date
Last Spring Freeze
January 5
50% probability date
Growing Season
354 days
Heating & Cooling Degree Days
Annual totals indicate energy demand for heating and cooling
Heating Degree Days
1,287
Higher = more heating needed
Cooling Degree Days
1,246
Higher = more cooling needed
Warmest Month
August
Coldest Month
January
Nationwide similar cities
Other rankable U.S. places outside CA closest to Tustin Irvine Rch 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 (65°F here).
- Big Spring, TX 65°F · 0.0°F off
- Camden, AL 65°F · 0.0°F off
- Columbus, NM 65°F · 0.0°F off
- Cuthbert, GA 65°F · 0.0°F off
Closest by annual precipitation
Nearest out-of-state peers by annual precipitation (14.1" here), excluding temperature-peer places.
- Brighton, CO 14.1" · 0.0" off
- Missoula, MT 14.1" · 0.0" off
- Pine Bluffs, WY 14.1" · 0.0" off
- Levan, UT 14.1" · 0.0" off
Scarce-water calendar
Where Tustin Irvine Rch's limited precipitation lands
mixed demand · dry · low swing
Local precipitation is sparse in this otherwise mixed profile. The station reports 14.1 inches annually, within PlainClimate's dry band. Recorded annual snowfall is negligible. The monthly distribution matters because the total alone does not reveal the timing.
The calendar stays thermally compact and dry. August and January mark the typical warm and cold ends of the calendar, only 19.6°F apart, while the annual precipitation total remains below PlainClimate's dry threshold. The annual average is 65°F. The monthly rows show whether that limited precipitation is spread through the year or concentrated in a shorter interval.
Tustin Irvine Rch combines a compact 19.6°F annual temperature range with meaningful demand on both sides of the thermostat: 1,287 heating and 1,246 cooling degree days. The balance matters more here than either annual total in isolation.
Tustin Irvine Rch has a long frost-free window of roughly 354 days, but the dry annual profile is a separate constraint. Growing-season length says when freezes are unlikely, not whether rainfall is sufficient.
Tustin Irvine Rch wettest normal
February
February concentrates the scarce annual total (14.1 inches).
Tustin Irvine Rch driest normal
August
August is typically driest; arid stations are defined by when water is absent, not by a four-season grid.
Questions about Tustin Irvine Rch's climate
How dry is Tustin Irvine Rch? ▼
How many days above 90°F does Tustin Irvine Rch get? ▼
How much energy does heating and cooling require in Tustin Irvine Rch? ▼
Data Sources
Data source: NOAA U.S. Climate Normals v1.0.1 (1991-2020). All figures on this page are from Tustin Irvine Rch's primary station: TUSTIN IRVINE RCH (USC00049087). 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 Tustin Irvine Rch; 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 Tustin Irvine Rch 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.