Ramona, California climate: Normal weather by month, frost dates and records
Ramona's normal year runs from 36°F December nights to 91°F August afternoons, with 14.7 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 16.2°C, December lows of 2°C, August highs of 33°C, 372 mm of precipitation a year.
- NOAA stationRamona Airport
- Station IDUSW00053120
- Location33.04°N 116.92°W
- Elevation1,393 ft (425 m)
- Population (census place)22,829
On October 23, the normal high in Ramona is 79°F and the normal low 47°F, and the chance of measurable rain or snow is 13%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Ramona.
- Jan 66° 37°
- Feb 66° 38°
- Mar 68° 40°
- Apr 72° 43°
- May 76° 49°
- Jun 83° 52°
- Jul 89° 58°
- Aug 91° 59°
- Sep 87° 55°
- Oct 80° 49°
- Nov 73° 40°
- Dec 66° 36°
Each month: normal high (large) and low, °F. Fill: the month's normal mean, colder blue to hotter red.
What is the weather like in Ramona each month?
August is the warmest month, with normal highs of 91°F; December the coldest, with normal lows of 36°F. The most precipitation falls in February (3.66 in), the least in August (0.04 in).
Each month has its own page with the day-by-day normals, the month's records and its recent years:
| Month | High | Low | Mean | Precip. | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|
| January | 66°F | 37°F | 51.4°F | 3.10 | 7 | <1 | 11 | 10 h 10 min |
| February | 66°F | 38°F | 51.9°F | 3.66 | 8 | <1 | 8 | 11 h |
| March | 68°F | 40°F | 53.8°F | 2.30 | 7 | <1 | 4 | 12 h |
| April | 72°F | 43°F | 57.3°F | 1.00 | 6 | 1 | 1 | 13 h |
| May | 76°F | 49°F | 62.2°F | 0.41 | 4 | 2 | <1 | 13 h 50 min |
| June | 83°F | 52°F | 67.5°F | 0.06 | 2 | 6 | <1 | 14 h 20 min |
| July | 89°F | 58°F | 73.2°F | 0.10 | 1 | 15 | <1 | 14 h 10 min |
| August | 91°F | 59°F | 74.7°F | 0.04 | 1 | 18 | <1 | 13 h 20 min |
| September | 87°F | 55°F | 71.2°F | 0.15 | 2 | 13 | <1 | 12 h 30 min |
| October | 80°F | 49°F | 64.2°F | 0.69 | 4 | 6 | <1 | 11 h 20 min |
| November | 73°F | 40°F | 56.4°F | 1.06 | 5 | 1 | 3 | 10 h 30 min |
| December | 66°F | 36°F | 50.6°F | 2.08 | 7 | <1 | 14 | 10 h |
| Year (annual) | 76°F | 46°F | 61.2°F | 14.65 | 53 | 62 | 40 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 19°C | 3°C | 10.8°C | 79 mm |
| February | 19°C | 3°C | 11.1°C | 93 mm |
| March | 20°C | 4°C | 12.1°C | 58 mm |
| April | 22°C | 6°C | 14.1°C | 25 mm |
| May | 24°C | 9°C | 16.8°C | 10 mm |
| June | 28°C | 11°C | 19.7°C | 2 mm |
| July | 32°C | 14°C | 22.9°C | 3 mm |
| August | 33°C | 15°C | 23.7°C | 1 mm |
| September | 31°C | 13°C | 21.8°C | 4 mm |
| October | 27°C | 9°C | 17.9°C | 18 mm |
| November | 23°C | 5°C | 13.6°C | 27 mm |
| December | 19°C | 2°C | 10.3°C | 53 mm |
NOAA publishes no 1991-2020 snowfall normal for this station. Ramona's own co-op station Ramona Fire Dept does: 0 inches of snow in a normal year (see the other stations below).
Source: NOAA NCEI 1991-2020 monthly normals, station USW00053120; 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.
When is the best weather to visit Ramona?
Normal highs sit between 65°F and 85°F in January, February, March, April, May, June, October, November and December. Of those, June has the fewest days with rain (2).
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 USW00053120.
When is the last frost in Ramona?
In Ramona, the last spring frost (32°F) comes after March 19 in half of years and after April 10 in one year in ten; the first autumn frost comes before November 23 in half of years and before November 6 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
- March 191 year in 10 after April 10; 9 in 10 after February 15
- First autumn frost, half of years before
- November 231 year in 10 before November 6; 9 in 10 before December 10
NOAA puts the median frost-free season at 248 days, and the season without a hard freeze (28°F) at 309 days.
A hard freeze (28°F) comes after February 7 in half of springs and before December 10 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Ramona in zone 9b in ZIP code 92065. By the map's own method, the average of each year's coldest night over 1991-2020, Ramona's NOAA station is in zone 9a: the coldest night of a typical year reaches 23°F (20 complete years); the map interpolates between stations and terrain, so the station and the ZIP area can differ by half a zone.
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00053120; 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 in Ramona?
In a normal year in Ramona, 62 days a year reach 90°F (7 of them 100°F or more), 40 nights fall to 32°F or colder and 53 days bring measurable precipitation.
- Days at 90°F or more
- 62a normal year
- Days at 100°F or more
- 7a normal year
- Nights at 32°F or colder
- 40a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 53a normal year
The highest temperature in Ramona's official record (kept by the National Weather Service since 1974) is 117°F, on July 6, 2018; the lowest is 16°F, on January 17, 2007.
The wettest calendar year on that record is 1978, with 38.65 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00053120; records: ACIS (NOAA Regional Climate Centers), NWS threaded record RNMthr. Records use complete months only; a month missing more than three days is left out.
How sunny is Ramona?
Over a year 91% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Ramona, 5.8 kWh per square metre a day. June is the sunniest month (96%) and February the cloudiest (84%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 85% | 3.4 |
| February | 84% | 4.3 |
| March | 88% | 5.7 |
| April | 90% | 7.0 |
| May | 93% | 7.9 |
| June | 96% | 8.4 |
| July | 93% | 7.8 |
| August | 94% | 7.3 |
| September | 94% | 6.3 |
| October | 92% | 5.0 |
| November | 89% | 3.7 |
| December | 85% | 3.0 |
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 much heating and cooling does Ramona need?
A normal year in Ramona brings 2,329 heating degree days, 57% fewer than the median U.S. place (5,373), and 957 cooling degree days, 5% more than the median (908). Four months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 4,298 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 424 | 1 |
| February | 367 | 1 |
| March | 349 | 0 |
| April | 239 | 7 |
| May | 115 | 28 |
| June | 24 | 97 |
| July | 1 | 255 |
| August | 1 | 303 |
| September | 11 | 196 |
| October | 85 | 61 |
| November | 267 | 9 |
| December | 446 | 0 |
| Year (annual) | 2,329 | 957 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00053120. 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.
Has Ramona been warmer than normal lately?
2025 averaged 61.7°F, 0.5°F above the 1991-2020 normal of 61.2°F. 3 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 60.9°F | −0.3°F | 12.16 |
| 2022 | 62.6°F | +1.4°F | 9.15 |
| 2023 | 60.4°F | −0.8°F | 22.95 |
| 2024 | 61.8°F | +0.6°F | 13.81 |
| 2025 | 61.7°F | +0.5°F | 12.98 |
Source: observed years: ACIS, station USW00053120. A year counts only with all twelve months complete.
How does Ramona's climate compare?
Ramona is warmer than 107 of the other 218 places with their own NOAA record in California, and wetter than 101. Across the 7,247 U.S. stations with normals, its annual mean of 61.2°F is warmer than 78%.
In the Köppen classification computed from these normals, Ramona is Csa: temperate, dry-summer, hot 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.
Which places near Ramona share this climate record?
San Diego Country Estates has no NOAA station with 1991-2020 normals of its own, and this station is the nearest full record. A place's own climate can differ from these figures, by several degrees where it sits much higher or lower than the station, nearer the coast, or inside a large city's heat; for the larger places the next nearest records are named with their yearly mean, so the spread around them is visible, and places of 50,000 or more have their own page with NOAA's gridded normals.
- San Diego Country Estates, CA10,142 people · 8 mi E
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
What do Ramona's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Ramona. This page uses Ramona Airport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Ramona Fire Dept USC00047228 | 2 mi S | 1,470 ft | 62.4°F | 38°F | 90°F | 14.4 | 0 | March 4 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Ramona's climate
What is the coldest month in Ramona?
December, with a normal high of 66°F and a normal low of 36°F. The warmest is August (91°F by day, 59°F at night).
Does it snow in Ramona?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Ramona's NOAA station; Ramona's own co-op station Ramona Fire Dept records 0 inches of snow in a normal year.
What is the rainiest month in Ramona?
February, with 3.66 in of precipitation in a normal year; the driest is August with 0.04 in.
What plant hardiness zone is Ramona in?
The USDA's 2023 map puts Ramona in zone 9b in ZIP code 92065. By the same method at Ramona's NOAA station, the coldest night of a typical year reaches 23°F (20 years, 1991-2020): zone 9a.
How late can frost come in Ramona?
In half of years the last 32°F night comes after March 19; in one year in ten it comes after April 10. Waiting until April 10 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Ramona in OctoberThis month day by day, its records and recent years
- California climateThe statewide normals and every place in the state
- San Pasqual Animal Park, CA6 miles from this station, 65.0°F a year
- Rancho Bernardo, CA10 miles from this station, 63.5°F a year
- Escondido, CA12 miles from this station, 65.8°F a year
- El Capitan Dam, CA12 miles from this station, 65.4°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made