Photo: Famartin · CC BY-SA 4.0March ARB reaches 100° on about 21 days a year, more than 95% of U.S. towns
The depth of winter brings overnight lows near 42°. Precipitation peaks in February and eases off in June. It is a dry place: less rain and snow fall here than on 97% of U.S. towns. The outdoor season runs from October to May, with highs of 66–82°.
A year in March ARB at a glance
Each month’s typical high and low, and what it brings.
What stands out about March ARB’s climate
Compared with towns across the U.S., with March ARB’s place in California beside it.
What a year in March ARB feels like
Typical highs and lows by season and by month, from NOAA’s 30-year normals.
About 21 days a year reach 100°
And 100 days reach 90°. Day counts come from NOAA’s station at March Afb, CA, 1.7 miles from the town’s center, at about the same height; frost dates and degree days from Riverside Citrus Exp, CA, 7 miles away.
The 2023 USDA map puts March ARB’s center in zone 9b: the coldest night of a typical winter, averaged over 1991–2020, reaches about 28°. Plant labels use the zone; frost dates tell you when to plant.
Freezing nights by month
Average nights at or below 32°
90° days by month
Average days at 90° or more
About 11 inches of rain a year
February is the wettest month and June the driest. Rain falls on about 38 days a year. Snow is rare: about 0.0" in a normal year at Riverside Citrus Exp, CA, so most winters see none.
Rain + melted snow by month
Inches of water
Heating and cooling a home in March ARB
41% of the work is heating, so air conditioning is the bigger bill. Months averaging under 55° run from December through February.
Degree days add up how far each day’s average falls below (heating) or rises above (cooling) 65° over a year. NOAA normals at Riverside Citrus Exp, CA.
Living with March ARB’s climate
What the numbers mean for a garden, a free afternoon and a bad-weather day.
Zone 9b. Frost comes about 1 winter in 2, so the growing year is set by heat, not cold: 21 days at 100° make midsummer the hard season for gardens.
Months with highs of 62–84° and lows of 40° or more: January, February, March, April, May, October, November and December. 24 miles of trails are waiting.
Parks & trails →Of the yearly building losses FEMA expects in March ARB from natural hazards, earthquakes are the largest share (50%). Normals are averages; the hazards page covers the extremes.
Natural hazards →March ARB and its neighbors
Perris has the coldest January nights next door (41°, 1° colder). Differences under a degree are within what the 5 km grid can tell apart. Tap a town to see its climate.
Climates most like March ARB’s, farther away
TownRatings’ own comparison of NOAA 1991–2020 normals, not a NOAA product: places of 5,000+ at least 150 miles away, one per state, closest on January low, July high, precipitation and snow.
| Town | Jan. low | July high | Precip. | Snow |
|---|---|---|---|---|
| March ARB, CA | 42° | 94° | 11" | 0.0" |
| Corona de Tucson, AZ | 36° | 96° | 14" | 0.1" |
| Fort Stockton, TX | 33° | 96° | 13" | 1.4" |
| Santa Teresa, NM | 33° | 95° | 9" | 2.0" |
| Ashland, OR | 31° | 91° | 19" | 0.5" |
Temperatures and rain come from NOAA’s 5 km grid, so each town gets its own value. Snow and frost-free days come from the nearest weather station, so neighbors often share them.
Warmer than it used to be
The last 30 years in March ARB averaged 2.0° warmer than the 1900s. The biggest change is in January (+3.0°).
A bigger shift than in 91% of U.S. towns.
Change by month
The two periods overlap (1991–2000 is in both), which makes the gap a little smaller than it would be between separate periods.
How March ARB compares
Against 12,954 U.S. towns of 2,500 or more (one per 5 km climate cell), with March ARB’s place among California’s.
March ARB weather by month
Highs, lows and precipitation from NOAA’s grid at March ARB’s center; snow, wet days and snow on the ground from Riverside Citrus Exp, CA. 1991–2020 normals.
| Month | High | Low | Rain + melt | Snow | Wet days | Snow on ground | 30-yr range |
|---|---|---|---|---|---|---|---|
| January | 66° | 42° | 2.3" | 0.0" | 7 | 0 | 50° – 60° |
| February | 67° | 43° | 2.8" | 0.0" | 7 | 0 | 48° – 63° |
| March | 70° | 46° | 1.5" | 0.0" | 6 | 0 | 52° – 64° |
| April | 75° | 48° | 0.6" | 0.0" | 4 | 0 | 57° – 65° |
| May | 79° | 52° | 0.2" | 0.0" | 2 | 0 | 60° – 72° |
| June | 87° | 57° | 0.0" | 0.0" | 1 | 0 | 67° – 77° |
| July | 94° | 63° | 0.1" | 0.0" | 1 | 0 | 74° – 84° |
| August | 96° | 64° | 0.1" | 0.0" | 0 | 0 | 77° – 84° |
| September | 91° | 61° | 0.1" | 0.0" | 1 | 0 | 72° – 80° |
| October | 82° | 54° | 0.5" | 0.0" | 2 | 0 | 64° – 73° |
| November | 74° | 47° | 0.8" | 0.0" | 3 | 0 | 53° – 65° |
| December | 66° | 42° | 1.6" | 0.0" | 5 | 0 | 50° – 62° |
| Year | 79° | 52° | 10.6" | 0.0" | 38 | 0 |
How much a month can swing
A normal is an average. February swings the most: from 1991 to 2020 its average ranged from 48° to 63°. August is the most reliable, staying within 7°.
Where March ARB’s numbers come from
Normals are 30-year averages, not a forecast. How TownRatings reads climate data →
- Temperatures and precipitation: NOAA’s gridded 1991–2020 normals for the 5 km cell at March ARB’s center.
- Snow: Riverside Citrus Exp, CA.
- Frost dates, heating and cooling: Riverside Citrus Exp, CA, 7 miles away.
- Freezing nights, 90° and 100° days: March Afb, CA, 1.7 miles from the town’s center, at about the same height; the nearest station that passes our checks for distance, height and agreement with the grid.
- Growing zone: USDA Plant Hardiness Zone Map, 2023. USDA Agricultural Research Service and PRISM Group, Oregon State University, prism.oregonstate.edu/phzm, accessed 8 Oct 2026.
- Then and now: NOAA’s gridded normals for 1901–2000 at the same cell.
- Storms and extremes: FEMA National Risk Index (expected annual losses to buildings).
Common questions about March ARB’s climate
What is the weather like in March ARB?
A typical July afternoon reaches 94°, a January night drops to 42°, and snow is almost unheard of. Milder January nights than 91% of U.S. towns; hotter July afternoons than 93% of U.S. towns.
How cold does it get in March ARB in winter?
December nights average 42°. About 25 nights a year reach 32° or below. In the coldest December of the last 30 years the month averaged 50°.
How much snow does March ARB get?
About 0.0 inches in a normal winter at Riverside Citrus Exp, CA, so most winters see none.
How hot does it get in March ARB?
July, with a typical high of 94° and a low of 63°. About 100 days a year reach 90° and 21 reach 100° (Riverside Citrus Exp, CA).
When is the first and last frost in March ARB?
Most years have no frost at all: a 32° night comes in about 45% of winters at Riverside Citrus Exp, CA, usually in December or January.
What growing zone is March ARB in?
Zone 9b on the 2023 USDA Plant Hardiness Zone Map: the coldest night of a typical winter reaches about 28°.
What is the best time of year to visit March ARB?
By one simple rule (highs of 62–84° and lows of 40° or more), January, February, March, April, May, October, November and December. The rule is ours, not NOAA’s; the month table has the numbers to judge by.
Is March ARB getting warmer?
Yes: 1991–2020 averaged 2.0° warmer than 1901–2000 on NOAA’s grid. A bigger shift than 91% of U.S. towns.
Neighbors talk weather
Gardens, snow, and the best days of the year in March ARB.
Source: NOAA NCEI U.S. Climate Normals, 1991–2020 and 1901–2000; USDA/PRISM 2023 hardiness zones; FEMA National Risk Index. Today’s forecast: National Weather Service.