Livermore, California climate: Normal weather by month, frost dates and records
Livermore's normal year runs from 38°F January nights to 88°F July afternoons, with 15.2 inches of precipitation a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 15.4°C, January lows of 3°C, July highs of 31°C, 386 mm of precipitation a year.
- NOAA stationLivermore Municipal Airport
- Station IDUSW00023285
- Location37.69°N 121.81°W
- Elevation393 ft (120 m)
- Population84,867
On October 23, the normal high in Livermore is 76°F and the normal low 48°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 Livermore.
- Jan 57° 38°
- Feb 61° 40°
- Mar 65° 42°
- Apr 69° 45°
- May 75° 49°
- Jun 83° 54°
- Jul 88° 57°
- Aug 88° 57°
- Sep 85° 55°
- Oct 78° 49°
- Nov 66° 42°
- Dec 58° 38°
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 Livermore each month?
July is the warmest month, with normal highs of 88°F; January the coldest, with normal lows of 38°F. The most precipitation falls in February (2.92 in), the least in July (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 | 57°F | 38°F | 47.6°F | 2.83 | 10 | <1 | 6 | 9 h 50 min |
| February | 61°F | 40°F | 50.4°F | 2.92 | 10 | <1 | 3 | 10 h 50 min |
| March | 65°F | 42°F | 53.5°F | 2.25 | 10 | <1 | 1 | 11 h 50 min |
| April | 69°F | 45°F | 56.9°F | 1.08 | 6 | 1 | <1 | 13 h 10 min |
| May | 75°F | 49°F | 62.4°F | 0.56 | 3 | 4 | <1 | 14 h 10 min |
| June | 83°F | 54°F | 68.0°F | 0.14 | 1 | 8 | <1 | 14 h 50 min |
| July | 88°F | 57°F | 72.2°F | 0.00 | <1 | 13 | <1 | 14 h 30 min |
| August | 88°F | 57°F | 72.1°F | 0.09 | <1 | 13 | <1 | 13 h 40 min |
| September | 85°F | 55°F | 70.2°F | 0.08 | 1 | 11 | <1 | 12 h 30 min |
| October | 78°F | 49°F | 63.5°F | 0.75 | 3 | 3 | <1 | 11 h 20 min |
| November | 66°F | 42°F | 53.8°F | 1.68 | 7 | <1 | 2 | 10 h 10 min |
| December | 58°F | 38°F | 47.7°F | 2.80 | 10 | <1 | 7 | 9 h 30 min |
| Year (annual) | 73°F | 47°F | 59.8°F | 15.18 | 61 | 52 | 19 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. |
|---|---|---|---|---|
| January | 14°C | 3°C | 8.7°C | 72 mm |
| February | 16°C | 4°C | 10.2°C | 74 mm |
| March | 18°C | 5°C | 11.9°C | 57 mm |
| April | 21°C | 7°C | 13.8°C | 27 mm |
| May | 24°C | 10°C | 16.9°C | 14 mm |
| June | 28°C | 12°C | 20.0°C | 4 mm |
| July | 31°C | 14°C | 22.3°C | 0 mm |
| August | 31°C | 14°C | 22.3°C | 2 mm |
| September | 30°C | 13°C | 21.2°C | 2 mm |
| October | 26°C | 10°C | 17.5°C | 19 mm |
| November | 19°C | 5°C | 12.1°C | 43 mm |
| December | 14°C | 3°C | 8.7°C | 71 mm |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00023285; 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 Livermore?
Normal highs sit between 65°F and 85°F in March, April, May, June, October and November. Of those, June 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 USW00023285.
When is the last frost in Livermore?
In Livermore, the last spring frost (32°F) comes after February 27 in half of years and after March 29 in one year in ten; the first autumn frost comes before December 1 in half of years and before November 14 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
- February 271 year in 10 after March 29; 9 in 10 after January 22
- First autumn frost, half of years before
- December 11 year in 10 before November 14; 9 in 10 before December 22
NOAA puts the median frost-free season at 278 days, and the season without a hard freeze (28°F) at 335 days.
A hard freeze (28°F) comes after January 19 in half of springs and before December 15 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Livermore in zone 9b in ZIP code 94551. By the map's own method, the average of each year's coldest night over 1991-2020, Livermore's NOAA station is in zone 9b: the coldest night of a typical year reaches 26°F (22 complete years).
Frost dates for every NOAA station in California · Frost dates by ZIP code
Source: NOAA NCEI 1991-2020 annual normals (frost probabilities), station USW00023285; 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 Livermore?
In a normal year in Livermore, 52 days a year reach 90°F (11 of them 100°F or more), 19 nights fall to 32°F or colder and 61 days bring measurable precipitation.
- Days at 90°F or more
- 52a normal year
- Days at 100°F or more
- 11a normal year
- Nights at 32°F or colder
- 19a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 61a normal year
The highest temperature in this station's record (since 1998) is 113°F, on July 23, 2006; the lowest is 20°F, on January 14, 2007.
The wettest calendar year on that record is 2017, with 20.98 in.
Source: NOAA NCEI 1991-2020 annual normals, station USW00023285; records: ACIS (NOAA Regional Climate Centers), station USW00023285. Records use complete months only; a month missing more than three days is left out.
How sunny is Livermore?
Over a year 89% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Livermore, 5.3 kWh per square metre a day. July is the sunniest month (97%) and January the cloudiest (74%). Among the 459 U.S. places of 50,000 or more, that ranks tied 39th (with 12 others) in sunshine.
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 74% | 2.4 |
| February | 78% | 3.5 |
| March | 81% | 4.8 |
| April | 85% | 6.2 |
| May | 90% | 7.5 |
| June | 95% | 8.3 |
| July | 97% | 8.2 |
| August | 97% | 7.4 |
| September | 95% | 6.0 |
| October | 91% | 4.4 |
| November | 83% | 2.9 |
| December | 74% | 2.2 |
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 Livermore need?
A normal year in Livermore brings 2,709 heating degree days, 50% fewer than the median U.S. place (5,373), and 848 cooling degree days, 7% fewer than the median (908). Five months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,930 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 539 | 0 |
| February | 407 | 0 |
| March | 358 | 0 |
| April | 249 | 8 |
| May | 126 | 44 |
| June | 33 | 125 |
| July | 4 | 226 |
| August | 3 | 223 |
| September | 15 | 170 |
| October | 97 | 52 |
| November | 338 | 1 |
| December | 538 | 0 |
| Year (annual) | 2,709 | 848 |
Source: NOAA NCEI 1991-2020 monthly normals, station USW00023285. 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 Livermore been warmer than normal lately?
2025 averaged 60.6°F, 0.8°F above the 1991-2020 normal of 59.8°F. 5 of the 5 complete years since 2021 ran warmer than the normal.
| Year | Mean | Against normal | Precip. |
|---|---|---|---|
| 2021 | 61.0°F | +1.3°F | 14.94 |
| 2022 | 61.0°F | +1.2°F | 11.97 |
| 2023 | 60.0°F | +0.2°F | 14.46 |
| 2024 | 62.1°F | +2.3°F | 15.77 |
| 2025 | 60.6°F | +0.8°F | 10.28 |
Source: observed years: ACIS, station USW00023285. A year counts only with all twelve months complete.
How does Livermore's climate compare?
Livermore is warmer than 90 of the other 218 places with their own NOAA record in California, and wetter than 106. Across the 7,247 U.S. stations with normals, its annual mean of 59.8°F is warmer than 74%.
In the Köppen classification computed from these normals, Livermore 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 Livermore share this climate record?
2 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.
- Pleasanton, CAalso near: Fremont (11 mi, 59.5°F a year); Hayward (13 mi, 59.6°F a year)75,664 people · 4 mi SW
- Dublin, CAalso near: Mount Diablo Junction (11 mi, 58.4°F a year); Hayward (13 mi, 59.6°F a year)70,544 people · 5 mi W
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 Livermore's other NOAA stations record?
One more NOAA station keeps 1991-2020 normals in or near Livermore. This page uses Livermore Municipal Airport; the other differs by site and elevation:
| Station | From this station | Elevation | Year | Jan low | Jul high | Precip. | Snow | Last frost |
|---|---|---|---|---|---|---|---|---|
| Livermore station USC00044997 | in town | 393 ft | 60.4°F | 39°F | 89°F | 14.6 | 0 | February 15 |
Source: NOAA NCEI 1991-2020 normals for each station. Last frost: the median last spring date of 32°F.
Questions about Livermore's climate
What is the coldest month in Livermore?
January, with a normal high of 57°F and a normal low of 38°F. The warmest is July (88°F by day, 57°F at night).
Does it snow in Livermore?
Rarely. NOAA publishes no 1991-2020 snowfall normal for Livermore's NOAA station; Livermore's own co-op station Livermore station records 0 inches of snow in a normal year.
What is the rainiest month in Livermore?
February, with 2.92 in of precipitation in a normal year; the driest is July with 0.00 in.
What plant hardiness zone is Livermore in?
The USDA's 2023 map puts Livermore in zone 9b in ZIP code 94551. By the same method at Livermore's NOAA station, the coldest night of a typical year reaches 26°F (22 years, 1991-2020): zone 9b.
How late can frost come in Livermore?
In half of years the last 32°F night comes after February 27; in one year in ten it comes after March 29. Waiting until March 29 leaves about a one-in-ten chance of a later frost.
Nearby and next
- Livermore in OctoberThis month day by day, its records and recent years
- California climateThe statewide normals and every place in the state
- Mount Diablo Junction, CA14 miles from this station, 58.4°F a year
- Fremont, CA15 miles from this station, 59.5°F a year
- Hayward, CA17 miles from this station, 59.6°F a year
- Newark, CA17 miles from this station, 59.9°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made