Groveland, California climate: Normal weather by month, frost dates and records
Groveland's normal year runs from 31°F December nights to 91°F July afternoons, with 38.7 inches of precipitation and 4 inches of snow a year. (NOAA 1991-2020 normals)
In metric: a yearly mean of 13.3°C, December lows of −1°C, July highs of 33°C, 982 mm of precipitation a year.
- NOAA stationGroveland 2
- Station IDUSC00043669
- Location37.84°N 120.23°W
- Elevation2,800 ft (853 m)
- Population (census place)644
On October 23, the normal high in Groveland is 71°F and the normal low 40°F, and the chance of measurable rain or snow is 16%.
Normals describe a typical year at the station, not a forecast. The National Weather Service forecast for Groveland.
- Jan 53° 31°
- Feb 55° 32°
- Mar 60° 35°
- Apr 65° 38°
- May 73° 44°
- Jun 83° 51°
- Jul 91° 56°
- Aug 91° 55°
- Sep 85° 50°
- Oct 74° 42°
- Nov 60° 35°
- Dec 52° 31°
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 Groveland each month?
July is the warmest month, with normal highs of 91°F; December the coldest, with normal lows of 31°F. The most precipitation falls in January (7.20 in), the least in July (0.00 in).
| Month | High | Low | Mean | Precip. | Snow | Wet days | 90°F days | Freezing nights | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | 53°F | 31°F | 42.2°F | 7.20 | 0.6 | 10 | <1 | 20 | 9 h 50 min |
| February | 55°F | 32°F | 43.5°F | 6.93 | 0.6 | 9 | <1 | 16 | 10 h 50 min |
| March | 60°F | 35°F | 47.5°F | 6.29 | 1.1 | 11 | <1 | 12 | 11 h 50 min |
| April | 65°F | 38°F | 51.4°F | 2.98 | 0.8 | 7 | <1 | 7 | 13 h 10 min |
| May | 73°F | 44°F | 58.6°F | 2.24 | 0.0 | 4 | 1 | 1 | 14 h 10 min |
| June | 83°F | 51°F | 67.0°F | 0.39 | 0.0 | 1 | 8 | <1 | 14 h 50 min |
| July | 91°F | 56°F | 73.7°F | 0.00 | 0.0 | <1 | 21 | <1 | 14 h 30 min |
| August | 91°F | 55°F | 72.8°F | 0.09 | 0.0 | 1 | 19 | <1 | 13 h 40 min |
| September | 85°F | 50°F | 67.3°F | 0.30 | 0.0 | 2 | 10 | <1 | 12 h 30 min |
| October | 74°F | 42°F | 57.7°F | 2.13 | 0.0 | 4 | 1 | 2 | 11 h 20 min |
| November | 60°F | 35°F | 47.6°F | 3.50 | 0.5 | 8 | <1 | 12 | 10 h 10 min |
| December | 52°F | 31°F | 41.4°F | 6.61 | 0.2 | 10 | <1 | 20 | 9 h 30 min |
| Year (annual) | 70°F | 42°F | 55.9°F | 38.66 | 3.8 | 66 | 59 | 91 |
The same normals in °C and millimetres
| Month | High | Low | Mean | Precip. | Snow |
|---|---|---|---|---|---|
| January | 12°C | −1°C | 5.7°C | 183 mm | 2 cm |
| February | 13°C | 0°C | 6.4°C | 176 mm | 2 cm |
| March | 16°C | 2°C | 8.6°C | 160 mm | 3 cm |
| April | 18°C | 3°C | 10.8°C | 76 mm | 2 cm |
| May | 23°C | 7°C | 14.8°C | 57 mm | 0 cm |
| June | 28°C | 11°C | 19.4°C | 10 mm | 0 cm |
| July | 33°C | 13°C | 23.2°C | 0 mm | 0 cm |
| August | 33°C | 13°C | 22.7°C | 2 mm | 0 cm |
| September | 29°C | 10°C | 19.6°C | 8 mm | 0 cm |
| October | 23°C | 5°C | 14.3°C | 54 mm | 0 cm |
| November | 16°C | 2°C | 8.7°C | 89 mm | 1 cm |
| December | 11°C | −1°C | 5.2°C | 168 mm | 1 cm |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00043669; 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 Groveland?
Normal highs sit between 65°F and 85°F in May, June, September and October. 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 USC00043669.
When is the last frost in Groveland?
In Groveland, the last spring frost (32°F) comes after April 22 in half of years and after May 14 in one year in ten; the first autumn frost comes before November 2 in half of years and before October 13 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
- April 221 year in 10 after May 14; 9 in 10 after April 5
- First autumn frost, half of years before
- November 21 year in 10 before October 13; 9 in 10 before November 20
NOAA puts the median frost-free season at 192 days, and the season without a hard freeze (28°F) at 235 days.
A hard freeze (28°F) comes after March 29 in half of springs and before November 19 in half of autumns.
The USDA's 2023 Plant Hardiness Zone Map puts Groveland in zone 9b in ZIP code 95305, the nearest ZIP area. By the map's own method, the average of each year's coldest night over 1991-2020, Groveland's NOAA station is in zone 8b: the coldest night of a typical year reaches 18°F (17 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 USC00043669; 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 Groveland?
In a normal year in Groveland, 59 days a year reach 90°F (4 of them 100°F or more), 91 nights fall to 32°F or colder and 66 days bring measurable precipitation.
- Days at 90°F or more
- 59a normal year
- Days at 100°F or more
- 4a normal year
- Nights at 32°F or colder
- 91a normal year
- Days that stay below freezing
- fewer than 1high of 32°F or less
- Days with 0.01 inch of precipitation
- 66a normal year
- Days with 1 inch of snow or more
- 2a normal year
Source: NOAA NCEI 1991-2020 annual normals, station USC00043669.
How sunny is Groveland?
Over a year 90% of the sunlight that would reach the ground under clear skies gets through the clouds in the area around Groveland, 5.3 kWh per square metre a day. July is the sunniest month (98%) and January the cloudiest (71%).
| Month | Share of clear-sky sunshine | Sunshine, kWh/m² a day |
|---|---|---|
| January | 71% | 2.3 |
| February | 78% | 3.5 |
| March | 82% | 4.9 |
| April | 86% | 6.3 |
| May | 92% | 7.6 |
| June | 96% | 8.4 |
| July | 98% | 8.2 |
| August | 98% | 7.4 |
| September | 96% | 6.0 |
| October | 92% | 4.4 |
| November | 82% | 2.9 |
| December | 72% | 2.1 |
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 Groveland need?
A normal year in Groveland brings 4,099 heating degree days, 24% fewer than the median U.S. place (5,373), and 802 cooling degree days, 12% fewer than the median (908). Six months need 300 or more heating degree days, a monthly mean of about 55°F or colder. For gardens and crops, NOAA counts 3,242 growing degree days a year above 50°F.
| Month | Heating | Cooling |
|---|---|---|
| January | 707 | 0 |
| February | 602 | 0 |
| March | 544 | 0 |
| April | 408 | 1 |
| May | 223 | 25 |
| June | 55 | 116 |
| July | 3 | 274 |
| August | 3 | 245 |
| September | 56 | 124 |
| October | 245 | 17 |
| November | 522 | 0 |
| December | 733 | 0 |
| Year (annual) | 4,099 | 802 |
Source: NOAA NCEI 1991-2020 monthly normals, station USC00043669. 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 Groveland been warmer than normal lately?
2023 averaged 55.6°F, 0.3°F below the 1991-2020 normal of 55.9°F. 1 of the 2 complete years since 2022 ran warmer than the normal.
| Year | Mean | Against normal | Precip. | Snow |
|---|---|---|---|---|
| 2022 | 57.2°F | +1.3°F | 28.23 | 3.3 |
| 2023 | 55.6°F | −0.3°F | 50.91 | 22.7 |
Source: observed years: ACIS, station USC00043669. A year counts only with all twelve months complete.
How does Groveland's climate compare?
Groveland is warmer than 45 of the other 218 places with their own NOAA record in California, and wetter than 184. Across the 7,247 U.S. stations with normals, its annual mean of 55.9°F is warmer than 63%.
In the Köppen classification computed from these normals, Groveland 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 Groveland share this climate record?
7 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.
- Pine Mountain Lake, CA2,758 people · 3 mi NE
- Lake Don Pedro, CA1,157 people · 16 mi SW
- Greeley Hill, CA997 people · 8 mi SE
- Bear Valley, CA239 people · 19 mi S
- La Grange, CA92 people · 18 mi SW
- Coulterville, CA13 people · 9 mi S
- Buck Meadows, CA0 people · 9 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.
Questions about Groveland's climate
What is the coldest month in Groveland?
December, with a normal high of 52°F and a normal low of 31°F. The warmest is July (91°F by day, 56°F at night).
Does it snow in Groveland?
Yes: 4 inches in a normal year, falling on 2 days with 0.1 inch or more, the most in March (1.1 inches).
What is the rainiest month in Groveland?
January, with 7.20 in of precipitation in a normal year; the driest is July with 0.00 in.
What plant hardiness zone is Groveland in?
The USDA's 2023 map puts Groveland in zone 9b in ZIP code 95305, the nearest ZIP area. By the same method at Groveland's NOAA station, the coldest night of a typical year reaches 18°F (17 years, 1991-2020): zone 8b.
How late can frost come in Groveland?
In half of years the last 32°F night comes after April 22; in one year in ten it comes after May 14. Waiting until May 14 leaves about a one-in-ten chance of a later frost.
Nearby and next
- California climateThe statewide normals and every place in the state
- Sonora, CA12 miles from this station, 57.7°F a year
- New Melones Dam Headquarters, CA18 miles from this station, 63.0°F a year
- Cherry Valley Dam, CA19 miles from this station, 54.6°F a year
- Yosemite Village (12 mi W), CA23 miles from this station, 49.5°F a year
- Compare two placesMonth by month, side by side
Download these normals (CSV) · JSON · How these figures are made