Delano, California climate: Normal weather by month, frost dates and records
Delano's normal year runs from 38°F January nights to 97°F July afternoons, with 7.5 inches of precipitation and less than an inch of snow (0.2 in) a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 17.9°C, January lows of 3°C, July highs of 36°C, 191 mm of precipitation a year.
- NOAA stationDelano
- Station IDUSC00042346
- Location35.77°N 119.26°W
- Elevation302 ft (92 m)
- Population53,198
On October 23, the normal high in Delano is 77°F and the normal low 50°F, and the chance of measurable rain or snow is 7%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Delano.
- Jan 56° 38°
- Feb 63° 41°
- Mar 69° 45°
- Apr 75° 49°
- May 83° 56°
- Jun 92° 62°
- Jul 97° 68°
- Aug 97° 66°
- Sep 91° 62°
- Oct 80° 53°
- Nov 66° 43°
- Dec 57° 37°
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 Delano each month?
July is the warmest month, with normal highs of 97°F; January the coldest, with normal lows of 38°F. The most precipitation falls in January (1.40 in), the least in August (0.00 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 | 56°F | 38°F | 46.9°F | 1.40 | 7 | <1 | 4 | 10 h |
| February | 63°F | 41°F | 51.9°F | 1.32 | 6 | <1 | 2 | 10 h 50 min |
| March | 69°F | 45°F | 57.0°F | 1.39 | 6 | <1 | 1 | 11 h 50 min |
| April | 75°F | 49°F | 62.1°F | 0.62 | 3 | 2 | <1 | 13 h |
| May | 83°F | 56°F | 69.3°F | 0.38 | 1 | 8 | <1 | 14 h |
| June | 92°F | 62°F | 77.0°F | 0.09 | <1 | 22 | <1 | 14 h 30 min |
| July | 97°F | 68°F | 82.5°F | 0.04 | <1 | 30 | <1 | 14 h 20 min |
| August | 97°F | 66°F | 81.0°F | 0.00 | <1 | 30 | <1 | 13 h 30 min |
| September | 91°F | 62°F | 76.1°F | 0.04 | 1 | 20 | <1 | 12 h 30 min |
| October | 80°F | 53°F | 66.1°F | 0.37 | 2 | 4 | <1 | 11 h 20 min |
| November | 66°F | 43°F | 54.4°F | 0.67 | 4 | <1 | 1 | 10 h 20 min |
| December | 57°F | 37°F | 47.0°F | 1.19 | 6 | <1 | 11 | 9 h 50 min |
| Year (annual) | 77°F | 51°F | 64.3°F | 7.51 | 36 | 116 | 18 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 13°C | 3°C | 8.3°C | 36 mm |
| February | 17°C | 5°C | 11.1°C | 34 mm |
| March | 21°C | 7°C | 13.9°C | 35 mm |
| April | 24°C | 10°C | 16.7°C | 16 mm |
| May | 28°C | 13°C | 20.7°C | 10 mm |
| June | 33°C | 17°C | 25.0°C | 2 mm |
| July | 36°C | 20°C | 28.1°C | 1 mm |
| August | 36°C | 19°C | 27.2°C | 0 mm |
| September | 33°C | 16°C | 24.5°C | 1 mm |
| October | 26°C | 11°C | 18.9°C | 9 mm |
| November | 19°C | 6°C | 12.4°C | 17 mm |
| December | 14°C | 3°C | 8.3°C | 30 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00042346; 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 Delano?
Normal highs sit between 65°F and 85°F in March, April, May, October and November. Of those, May has the fewest days with rain (1).
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 USC00042346.
When is the last frost in Delano?
In Delano, the last spring frost (32°F) comes after January 31 in half of years and after March 5 in one year in ten; the first autumn frost comes before December 8 in half of years and before November 23 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
- January 311 year in 10 after March 5; 9 in 10 after December 30
- First autumn frost, half of years before
- December 81 year in 10 before November 23; 9 in 10 before December 30
NOAA puts the median frost-free season at 309 days, and the season without a hard freeze (28°F) at 354 days.
A hard freeze (28°F) comes after December 31 in half of springs and before December 19 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Delano in zone 9b in ZIP code 93215, the nearest ZIP area.
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USC00042346; USDA 2023 Plant Hardiness Zone Map, ZIP listings: PRISM Group, Oregon State University, https://prism.oregonstate.edu, accessed October 8, 2026. 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 Delano?
In a normal year in Delano, 116 days a year reach 90°F (34 of them 100°F or more), 18 nights fall to 32°F or colder and 36 days bring measurable precipitation.
- Days at 90°F or more
- 116a normal year
- Days at 100°F or more
- 34a normal year
- Nights at 32°F or colder
- 18a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 36a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00042346.
How sunny is Delano?
Over a year 91% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Delano, 5.6 kWh per square metre a day. August is the sunniest month (98%) and January the cloudiest (74%). Among the 459 U.S. places of 50,000 or more, that ranks tied 11th (with 9 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 74% | 2.7 |
| February | 81% | 3.8 |
| March | 85% | 5.2 |
| April | 88% | 6.6 |
| May | 93% | 7.8 |
| June | 97% | 8.5 |
| July | 97% | 8.1 |
| August | 98% | 7.5 |
| September | 97% | 6.3 |
| October | 92% | 4.7 |
| November | 85% | 3.3 |
| December | 77% | 2.5 |
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 Delano need?
A normal year in Delano brings 2,282 heating degree days, 58% fewer than the median U.S. place (5,373), and 2,036 cooling degree days, 2.2 times 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 5,546 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 563 | 0 |
| February | 369 | 1 |
| March | 251 | 3 |
| April | 125 | 36 |
| May | 29 | 162 |
| June | 4 | 364 |
| July | 0 | 541 |
| August | 0 | 496 |
| September | 3 | 338 |
| October | 61 | 95 |
| November | 319 | 1 |
| December | 559 | 0 |
| Year (annual) | 2,282 | 2,036 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00042346. 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.
How does Delano's climate compare?
Delano is warmer than 168 of the other 218 places with their own NOAA record in California, and wetter than 30. Across the 7,247 U.S. stations with normals, its annual mean of 64.3°F is warmer than 86%.
In the Köppen classification computed from these normals, Delano is BSk: cold semi-arid steppe. 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 Delano share this climate record?
9 places have no NOAA station with 1991-2020 normals of their 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.
- McFarland, CA14,365 people · 7 mi S
- Earlimart, CA7,716 people · 9 mi N
- Pixley, CA3,796 people · 15 mi N
- Richgrove, CA2,136 people · 9 mi E
- Teviston, CA1,092 people · 11 mi N
- Alpaugh, CA853 people · 15 mi NW
- Allensworth, CA443 people · 9 mi NW
- Rodriguez Camp, CA61 people · 7 mi E
- Jovista, CA14 people · 4 mi NE
Source: Census Bureau 2024 Gazetteer (place centers) and Vintage 2024 population estimates. Distance and direction from the station to each place's center.
Questions about Delano's climate
What is the coldest month in Delano?
January, with a normal high of 56°F and a normal low of 38°F. The warmest is July (97°F by day, 68°F at night).
Does it snow in Delano?
Rarely: NOAA's normal is 0.2 inch a year.
What is the rainiest month in Delano?
January, with 1.40 in of precipitation in a normal year; the driest is August with 0.00 in.
What plant hardiness zone is Delano in?
The USDA's 2023 map puts Delano in zone 9b in ZIP code 93215, the nearest ZIP area.
How late can frost come in Delano?
In half of years the last 32°F night comes after January 31; in one year in ten it comes after March 5. Waiting until March 5 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Delano in OctoberThis month day by day, its records and recent years
- California climateThe statewide normals and every place in the state
- Wasco, CA14 miles from this station, 66.0°F a year
- Shafter, CA21 miles from this station, 62.9°F a year
- Porterville, CA25 miles from this station, 65.7°F a year
- Bakersfield, CA26 miles from this station, 66.2°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made