Regions › North America › United States
United States. Growing season April–October, harvest usually September–October. 26 vintages of weather, 2000–2025.
Photo: a200/a77Wells, CC BY 2.0, via Wikimedia Commons
Over the 30 growing seasons from 1991 to 2020, Paso Robles's vines saw on average 1,900 growing degree days between April and October. That puts it in Winkler region III, close in heat and rain to Maipo Valley, Napa Valley and Sonoma County. In a typical year about 51 mm of rain falls in the growing season, 20 mm of it in September–October.
Since 2000 the warmest season was 2022 (+11% against normal) and the coolest 2010 (-14%). The wettest harvest window was 2004, with 101 mm against a normal 20 mm.
The last 10 vintages (2016–2025) averaged +2% against the 1991–2020 normal, compared with -2% for 2000–2009; 4 of those 10 seasons were warmer than normal by more than 3%.
Growing degree days (base 10°C) for each season. The dashed line is the 1991–2020 normal (1,900 GDD) and the shaded band one standard deviation either side: about two years in three fall inside it.
Full bar: rain over the whole growing season. Dark part: rain in the harvest window (September–October). The line is the normal season total, 51 mm.
Apr–Oct 2025
Cooler
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 21 of 26 for heat · Winkler III
Apr–Oct 2024
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 13 of 26 for heat · Winkler III
Apr–Oct 2023
Cooler
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 23 of 26 for heat · Winkler III
Apr–Oct 2022
Much warmer
Hot months: Jun +3.0°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 1 of 26 for heat · Winkler IV
Apr–Oct 2021
Cooler
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 20 of 26 for heat · Winkler III
Apr–Oct 2020
Much warmer
Hot months: Oct +2.5°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 2 of 26 for heat · Winkler IV
Apr–Oct 2019
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 16 of 26 for heat · Winkler III
Apr–Oct 2018
Warmer
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 9 of 26 for heat · Winkler IV
Apr–Oct 2017
Much warmer
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 4 of 26 for heat · Winkler IV
Apr–Oct 2016
Near normal
Hot months: Apr +2.8° Jun +2.6°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 10 of 26 for heat · Winkler IV
Apr–Oct 2015
Warmer
Hot months: Oct +2.6°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 5 of 26 for heat · Winkler IV
Apr–Oct 2014
Much warmer
Hot months: Apr +2.3° May +3.6° Oct +2.8°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 3 of 26 for heat · Winkler IV
Apr–Oct 2013
Warmer
Hot months: Apr +2.7° May +2.2°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 7 of 26 for heat · Winkler IV
Apr–Oct 2012
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 11 of 26 for heat · Winkler III
Apr–Oct 2011
Much cooler
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 25 of 26 for heat · Winkler III
Apr–Oct 2010
Much cooler
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 26 of 26 for heat · Winkler II
Apr–Oct 2009
Cooler
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 19 of 26 for heat · Winkler III
Apr–Oct 2008
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 12 of 26 for heat · Winkler III
Apr–Oct 2007
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 14 of 26 for heat · Winkler III
Apr–Oct 2006
Cooler
Hot months: Jul +2.7°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 22 of 26 for heat · Winkler III
Apr–Oct 2005
Much cooler
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 24 of 26 for heat · Winkler III
Apr–Oct 2004
Cooler
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 18 of 26 for heat · Winkler III
Apr–Oct 2003
Warmer
Hot months: Jul +3.3° Oct +2.8°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 6 of 26 for heat · Winkler IV
Apr–Oct 2002
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 17 of 26 for heat · Winkler III
Apr–Oct 2001
Warmer
Hot months: May +4.2° Jun +2.0°
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 8 of 26 for heat · Winkler IV
Apr–Oct 2000
Near normal
No month ran 2°C above its normal high
Bars: mean daily high each month (red = 2°C or more above normal, blue = that much below). Line: the 1991–2020 normal.
Rank 15 of 26 for heat · Winkler III
| Vintage | GDD | vs normal | Season rain | Harvest rain | Hottest month (mean high) |
|---|---|---|---|---|---|
| 2025 | 1,830 | -4% | 50 mm | 41 mm | August 32.3°C |
| 2024 | 1,890 | -1% | 43 mm | 6 mm | July 33.3°C |
| 2023 | 1,770 | -7% | 22 mm | 2 mm | July 33.3°C |
| 2022 | 2,120 | +11% | 37 mm | 27 mm | August 32.9°C |
| 2021 | 1,830 | -4% | 38 mm | 36 mm | July 31.3°C |
| 2020 | 2,090 | +10% | 54 mm | 0 mm | August 34.0°C |
| 2019 | 1,870 | -2% | 32 mm | 0 mm | July 32.1°C |
| 2018 | 1,970 | +3% | 12 mm | 4 mm | July 33.8°C |
| 2017 | 2,070 | +9% | 28 mm | 4 mm | July 33.6°C |
| 2016 | 1,960 | +3% | 47 mm | 34 mm | June 32.3°C |
| 2015 | 2,050 | +8% | 31 mm | 9 mm | August 32.7°C |
| 2014 | 2,080 | +9% | 20 mm | 2 mm | July 31.8°C |
| 2013 | 1,980 | +4% | 10 mm | 3 mm | August 32.3°C |
| 2012 | 1,900 | -0% | 64 mm | 10 mm | August 33.3°C |
| 2011 | 1,710 | -10% | 49 mm | 27 mm | August 31.9°C |
| 2010 | 1,640 | -14% | 94 mm | 35 mm | September 30.8°C |
| 2009 | 1,840 | -4% | 77 mm | 62 mm | July 32.3°C |
| 2008 | 1,890 | -1% | 16 mm | 5 mm | August 32.3°C |
| 2007 | 1,890 | -1% | 38 mm | 20 mm | July 32.2°C |
| 2006 | 1,820 | -4% | 110 mm | 11 mm | July 34.8°C |
| 2005 | 1,730 | -9% | 55 mm | 13 mm | July 32.8°C |
| 2004 | 1,850 | -3% | 102 mm | 101 mm | August 31.2°C |
| 2003 | 2,010 | +6% | 80 mm | 11 mm | July 35.4°C |
| 2002 | 1,850 | -3% | 26 mm | 8 mm | July 32.3°C |
| 2001 | 1,970 | +4% | 45 mm | 12 mm | August 33.5°C |
| 2000 | 1,880 | -1% | 102 mm | 60 mm | August 32.9°C |
| 1991–2020 | 1,900 | ±7% (1 SD) | 51 mm | 20 mm |
The closest matches on this site by normal heat and season rain. Similar weather is one ingredient; soils, slopes and grapes differ.
