| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | RH (%) | Max RH (%) | Daily Min RH (%) | Wind Spd (mph) | Daily Max Wind (mph) | Time of Max Wind | Max Wind Dir (°) | Daily Rain (In) | Season Precip (In) | Daily ETo (in) | Daily Solar Rad (Cal/cm2) | Powdery Mildew Stress (pts) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rockpile Lower (Cooley) | 5/15/25 | 79.4 3.2 | 1314 | 46.8 0.9 | 0432 | 42.5 0.7 | 53 | 86 4 | 24 0 | 4.8 | 25.6 5.5 | 1825 | W | 274 | 0.00 | 50.81 | - | - | 20 20 |
| Rockpile Upper (Cooley) | 5/15/25 | 76.3 3.2 | 1516 | 44.4 2.5 | 0155 | 41.8 0.8 | 55 | 88 12 | 27 1 | 11.2 | 38.1 12.3 | 1916 | NNW | 332 | 0.00 | 50.35 | 0.241 0.031 | 686 18 | 40 20 |
| Cloverdale-East (Ranch 83) | 5/15/25 | 84.6 3.0 | 1443 | 49.9 2.4 | 0638 | 44.2 1.1 | - | - | - | 4.9 | 18.2 3.2 | 1705 | NW | 304 | 0.00 | 41.10 | 0.220 0.025 | 611 8 | 10 10 |
| Cloverdale-SE (Ranch 38) | 5/15/25 | 84.8 6.1 | 1443 | 49.4 1.1 | 0635 | 45.7 0.8 | 54 | 84 4 | 24 8 | 8.0 | 23.3 4.3 | 0511 | NNE | 14 | 0.00 | 43.41 | 0.232 0.032 | 622 31 | 40 20 |
| Geyserville-North (Hoffman) | 5/15/25 | 83.8 5.4 | 1541 | 47.2 1.0 | 0606 | 45.8 0.8 | 52 | 87 2 | 23 11 | 3.8 | 15.3 1.2 | 2249 | W | 279 | 0.00 | 36.20 | 0.218 0.034 | 611 46 | 40 20 |
| Geyserville (Ranch 3) | 5/15/25 | 84.0 5.2 | 1513 | 48.8 1.2 | 0551 | 44.3 1.5 | 48 | 84 4 | 18 12 | 4.6 | 17.4 3.7 | 1514 | SW | 234 | 0.00 | 47.27 | 0.234 0.031 | 653 23 | 90 20 |
| Geyserville-East (Ranch 40) | 5/15/25 | 83.0 7.2 | 1508 | 47.2 0.9 | 0545 | 46.3 0.4 | 55 | 91 2 | 25 11 | 4.8 | 19.1 2.9 | 1442 | S | 185 | 0.00 | 46.39 | 0.227 0.029 | 661 47 | 90 20 |
| Geyserville-South (Nervo Station) | 5/15/25 | 84.1 7.6 | 1543 | 49.0 1.8 | 0604 | - | - | - | - | 4.5 | 19.5 6.4 | 2003 | WNW | 287 | 0.00 | 37.57 | - | - | 40 20 |
| Lytton (River Oaks) | 5/15/25 | 84.0 6.1 | 1626 | 46.0 4.1 | 0443 | 45.5 0.9 | 53 | 91 5 | 22 8 | 3.6 | 16.3 1.0 | 1556 | WNW | 296 | 0.00 | 47.95 | 0.226 0.035 | 649 34 | 90 20 |
| Jimtown-North (Piccolo Ranch 15) | 5/15/25 | 82.7 5.4 | 1701 | 43.9 1.8 | 0627 | 43.5 0.8 | 51 | 98 2 | 20 9 | 2.4 | 15.8 1.1 | 1550 | S | 187 | 0.00 | 45.66 | 0.201 0.027 | 609 43 | 0 0 |
| Jimtown-NE (Red Fan) | 5/15/25 | 83.3 5.3 | 1650 | 44.1 2.9 | 0613 | 44.7 0.6 | 55 | 97 1 | 20 8 | 3.9 | 16.8 1.5 | 1945 | NW | 311 | 0.00 | 38.40 | 0.242 0.043 | 692 65 | 0 0 |
| HWY 128/Chalk Hill Rd (Landslide) | 4/25/25 | 59.6 0.9 | 1446 | 45.3 0.0 | 0008 | 42.8 3.1 | 70 | 92 4 | 49 15 | 2.7 | 11.5 1.8 | 1830 | S | 174 | 0.00 | 19.68 | 0.024 0.011 | 0 0 | 0 0 |
| N Chalk Hill Rd (Ranch 63) | 5/15/25 | 82.5 5.8 | 1747 | 42.5 1.7 | 0616 | 45.5 0.6 | 57 | 100 0 | 24 6 | 2.3 | 16.2 1.7 | 1500 | SSW | 198 | 0.00 | 48.39 | 0.206 0.035 | 614 45 | 100 0 |
| Knights Valley (Bavarian Lion) | 5/15/25 | 79.1 3.7 | 1356 | 41.2 2.5 | 0626 | 45.4 0.6 | 60 | 97 0 | 28 1 | 2.8 | 16.7 1.6 | 1518 | SSW | 192 | 0.00 | 48.28 | 0.215 0.034 | 681 63 | 10 10 |
| Upper Dry Creek Valley | 5/15/25 | 83.3 4.5 | 1405 | 46.7 0.4 | 0615 | 44.1 1.3 | 48 | 92 0 | 23 7 | 4.2 | 21.7 9.6 | 1826 | NW | 310 | 0.00 | 49.29 | 0.243 0.031 | 677 19 | 20 20 |
| Lower Dry Creek Valley | 5/15/25 | 84.3 5.7 | 1515 | 45.5 1.9 | 0617 | 44.3 2.0 | 49 | 93 7 | 21 7 | 5.0 | 18.1 3.3 | 1536 | WNW | 296 | 0.00 | 50.45 | 0.241 0.045 | 638 35 | 40 20 |
| Max | 84.8 | - | 49.9 | - | 46.3 | 60 | 100 | 28 | 11.2 | 38.1 | - | - | 0.00 | 50.81 | 0.243 | 692 | - | |
| Avg | - | - | - | - | 44.5 | 53 | - | - | 4.7 | - | - | - | - | - | - | - | - | |
| Min | 76.3 | - | 41.2 | - | 41.8 | 48 | 84 | 18 | 2.3 | 15.3 | - | - | 0.00 | 36.20 | 0.201 | 609 | - |
| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | RH (%) | Max RH (%) | Daily Min RH (%) | Wind Spd (mph) | Daily Max Wind (mph) | Time of Max Wind | Daily Rain (In) | Season Precip (In) | Daily ETo (in) | Daily Solar Rad (Cal/cm2) | Powdery Mildew Stress (pts) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Healdsburg-South (Sodini) | 5/15/25 | 82.4 5.9 | 1555 | 45.3 1.8 | 0617 | - | - | 97 3 | 23 7 | 2.6 | 17.7 2.2 | 1540 | 0.00 | 45.78 | - | - | 0 |
| Windsor-NW (Ranch 8) | 5/15/25 | 81.0 4.7 | 1336 | 46.7 0.5 | 0549 | 49.1 0.3 | 64 | 86 1 | 30 8 | 2.0 | 17.5 6.0 | 1524 | 0.00 | 45.24 | 0.210 0.032 | 666 50 | 0 |
| Windsor-East (Ranch 16) | 5/15/25 | 81.8 5.6 | 1514 | 46.9 2.8 | 0256 | 46.8 0.9 | 59 | 93 3 | 26 2 | 3.9 | 13.7 0.3 | 1747 | 0.00 | 38.45 | 0.224 0.031 | 681 59 | 0 |
| Mark West-North (Ranch 14) | 5/15/25 | 80.2 5.6 | 1559 | 44.6 0.2 | 0527 | 46.4 0.4 | 61 | 94 1 | 25 6 | 2.1 | 12.2 0.3 | 1315 | 0.00 | 44.09 | 0.039 0.007 | 0 0 | 60 |
| Windsor-SE (Silk Rd) | 5/15/25 | 80.4 5.0 | 1559 | 43.2 1.0 | 0604 | 46.8 0.1 | 65 | 98 0 | 26 5 | 2.5 | 16.6 2.5 | 1613 | 0.00 | 48.00 | 0.210 0.030 | 656 47 | 0 |
| Fulton-NW (Ranch 5) | 5/15/25 | 80.3 5.4 | 1518 | 42.7 0.0 | 0539 | 46.8 0.4 | 65 | 96 1 | 27 5 | 2.9 | 14.8 0.4 | 1736 | 0.00 | 42.80 | 0.214 0.026 | 660 46 | 0 |
| Windsor-South (Laughlin Rd) | 5/15/25 | 81.1 5.7 | 1607 | 45.4 0.8 | 0551 | - | - | - | - | - | - | - | 0.00 | 43.28 | - | - | 0 |
| Fulton-SE (Barnes Rd) | 5/15/25 | 79.5 5.0 | 1543 | 44.6 1.2 | 0601 | 47.4 0.7 | 64 | 94 1 | 31 4 | 2.7 | 14.7 0.9 | 1655 | 0.00 | 39.62 | - | - | 0 |
| Fulton-SW (Ranch 21) | 5/15/25 | 80.4 6.8 | 1601 | 43.2 1.2 | 0614 | - | - | - | - | 3.4 | 18.0 1.1 | 1549 | 0.00 | 32.70 | 0.223 0.026 | 700 45 | 0 |
| Santa Rosa-NW (Goldfields) | 5/15/25 | 80.7 7.3 | 1557 | 44.0 1.1 | 0521 | 47.4 0.5 | 67 | 95 1 | 28 3 | 3.1 | 14.8 0.7 | 1731 | 0.00 | 42.89 | 0.185 0.023 | 546 42 | 0 |
| Goldfields Remote | 5/15/25 | 81.2 5.9 | 1603 | 42.9 1.4 | 0608 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| NW Santa Rosa (Piner Road) | 5/15/25 | 80.0 6.7 | 1610 | 41.2 0.4 | 0604 | 49.2 0.5 | 73 | 100 0 | 32 5 | 2.5 | 16.2 0.4 | 1548 | 0.00 | 37.59 | - | - | 0 |
| River Rd South (Denner Ranch) | 5/15/25 | 79.8 6.2 | 1604 | 41.5 0.2 | 0620 | 47.1 0.0 | 69 | 98 0 | 23 9 | 4.4 | 22.1 4.2 | 1529 | - | - | - | - | 0 |
| West Santa Rosa (LOV Vineyard) | 5/15/25 | 80.1 6.8 | 1607 | 42.8 0.7 | 0602 | 47.4 0.3 | 68 | 98 0 | 24 9 | 2.0 | 15.5 1.4 | 1613 | 0.00 | 43.86 | 0.037 0.009 | 0 0 | 0 |
| Guerneville Rd (Prokopakis) | 5/15/25 | 81.9 5.1 | 1510 | 44.0 1.1 | 0601 | 48.0 0.3 | 66 | 98 0 | 24 8 | - | - | - | 0.00 | 34.52 | - | - | 0 |
| Guerneville Rd West (Balletto) | 5/15/25 | 80.1 7.2 | 1612 | 42.6 1.2 | 0554 | 48.7 0.5 | 71 | 97 0 | 29 9 | 2.9 | 14.8 0.0 | 1706 | 0.00 | 29.95 | - | - | 0 |
| Guerneville Rd East (Rich Ranch) | 5/15/25 | 81.2 6.2 | 1609 | 41.8 0.6 | 0537 | 46.9 0.7 | 66 | 95 2 | 28 2 | - | - | - | - | - | - | - | 0 |
| Sanchietti Ranch | 5/15/25 | 79.8 4.7 | 1524 | 42.4 1.7 | 0518 | 49.2 0.8 | - | 98 0 | 37 3 | 3.2 | 15.2 0.3 | 1437 | 0.00 | 40.89 | - | - | 0 |
| Occidental Rd (Sebastopol) | 5/15/25 | 79.6 5.4 | 1556 | 41.4 1.3 | 0613 | 55.3 0.9 | 91 | 100 0 | 53 7 | 2.7 | 17.8 1.5 | 1503 | 0.00 | 28.91 | - | - | 0 |
| Lower Westside Rd (Ranch 12) | 5/15/25 | 79.5 3.8 | 1600 | 43.8 2.1 | 0511 | 46.1 0.4 | 64 | 97 0 | 25 5 | 2.5 | 21.0 9.2 | 1439 | 0.00 | 46.13 | 0.054 0.022 | 0 0 | 0 |
| Guerneville (Laughlin Rd) | 5/15/25 | 80.2 4.7 | 1446 | 43.2 2.3 | 0424 | 46.7 1.1 | 66 | 97 0 | 28 2 | 2.5 | 15.5 0.1 | 1604 | 0.00 | 58.28 | - | - | 0 |
| Korbel (Winery) | 5/15/25 | 78.5 4.2 | 1545 | 45.6 2.2 | 0445 | 47.8 1.2 | 66 | 97 0 | 31 2 | 1.2 | 15.9 0.4 | 1547 | 0.00 | 52.61 | - | - | 0 |
| Forestville (Shone Farms) | 5/15/25 | 80.6 4.1 | 1338 | 45.2 2.0 | 0609 | 47.2 0.4 | 63 | 96 0 | 25 8 | 2.6 | 19.0 2.2 | 1556 | 0.00 | 52.39 | 0.210 0.031 | 653 57 | 0 |
| Forestville-NE (Ranch 30) | 5/15/25 | 80.7 4.1 | 1700 | 43.5 0.7 | 0543 | 48.3 0.1 | 67 | 100 3 | 28 8 | 2.8 | 19.4 1.0 | 1600 | 0.00 | 46.49 | 0.223 0.032 | 688 56 | 40 |
| Green Valley Vineyard | 5/15/25 | 78.3 5.4 | 1459 | 44.9 2.4 | 0524 | 46.8 0.9 | 66 | 98 1 | 22 11 | 3.1 | 20.4 5.3 | 1620 | 0.00 | 60.18 | 0.179 0.054 | 504 128 | 0 |
| Green Valley (Sanchietti) | 5/15/25 | 81.7 5.4 | 1424 | 41.4 1.7 | 0611 | - | - | - | - | - | - | - | - | - | - | - | 0 |
| Keefer Ranch (Green Valley) | 5/15/25 | 78.5 5.2 | 1548 | 41.6 1.6 | 0601 | 48.4 0.4 | 72 | 100 0 | 27 11 | - | - | - | 0.00 | 55.69 | - | - | 0 |
| Graton-South (Mill Station Rd) | 5/15/25 | 77.1 6.0 | 1544 | 41.3 1.9 | 0553 | 47.5 0.4 | 72 | 99 0 | 31 6 | 1.3 | 10.7 1.0 | 1331 | 0.00 | 45.53 | - | - | 0 |
| Occidental (Horseshoe Bend) | 5/15/25 | 76.3 5.4 | 1518 | 46.9 1.5 | 0449 | 48.0 0.4 | - | 94 1 | 27 8 | - | - | - | 0.00 | 42.21 | - | - | 0 |
| Sexton Valley (Jacqueline's Blk) | 5/15/25 | 75.8 5.3 | 1551 | 42.5 2.0 | 0621 | 49.5 0.5 | 76 | 99 0 | 41 5 | 1.7 | 13.8 0.7 | 1540 | 0.00 | 40.84 | - | - | 0 |
| Sebastopol Hills (Burnside Rd) | 5/15/25 | 73.5 4.7 | 1559 | 48.7 2.1 | 0631 | 49.6 0.1 | 73 | 93 2 | 46 2 | 3.1 | 15.9 1.0 | 1525 | 0.00 | 44.85 | - | - | 0 |
| Seaview/Fort Ross (Hirsch) | 5/15/25 | 73.8 5.2 | 1504 | 47.1 2.3 | 0349 | 43.7 1.2 | 57 | 83 10 | 27 13 | 3.8 | 17.8 3.6 | 2245 | 0.00 | 73.33 | 0.207 0.018 | 712 2 | 0 |
| Max | 82.4 | - | 48.7 | - | 55.3 | 91 | 100 | 53 | 4.4 | 22.1 | - | 0.00 | 73.33 | 0.224 | 712 | - | |
| Avg | - | - | - | - | 47.9 | 68 | - | - | 2.7 | - | - | - | - | - | - | - | |
| Min | 73.5 | - | 41.2 | - | 43.7 | 57 | 83 | 22 | 1.2 | 10.7 | - | 0.00 | 28.91 | 0.037 | 0 | - |
| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | Max RH (%) | Daily Min RH (%) | Wind Spd (mph) | Daily Max Wind (mph) | Time of Max Wind | Max Wind Dir (°) | Daily Rain (In) | Season Precip (In) | Daily ETo (in) | Daily Solar Rad (Cal/cm2) | Powdery Mildew Stress (pts) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Upper Rincon Valley | 5/15/25 | 75.3 3.9 | 1347 | 47.6 2.6 | 0535 | 45.9 0.9 | 89 4 | 36 1 | 2.5 0.1 | 12.2 0.7 | 1442 | SSE | 147 | 0.00 | 51.06 | 0.201 0.017 | 691 35 | 20 10 |
| Lower Bennett Valley | 5/15/25 | 75.2 2.2 | 1224 | 38.5 0.6 | 0553 | 47.2 1.3 | 100 0 | 38 0 | 2.9 0.3 | 15.4 0.4 | 1626 | S | 180 | 0.00 | 30.62 | 0.201 0.023 | 665 47 | 0 0 |
| Kenwood (Wildwood) | 5/15/25 | 77.8 2.5 | 1311 | 42.3 0.9 | 0550 | 46.8 0.8 | 100 0 | 34 3 | 2.8 0.5 | 15.0 1.4 | 1453 | NNW | 339 | 0.00 | 42.28 | 0.202 0.021 | 675 46 | 0 0 |
| Sonoma Valley (Bedrock) | 5/15/25 | 79.6 4.4 | 1512 | 41.7 1.3 | 0540 | 44.0 0.1 | 96 1 | 18 12 | 0.0 0.0 | 0.0 0.0 | 0101 | NNE | 20 | 0.00 | 39.99 | - | - | 30 20 |
| Sonoma-West (Arnold) | 5/15/25 | 80.2 3.0 | 1317 | 42.9 3.1 | 0443 | 46.7 0.8 | 96 4 | 28 2 | 2.8 0.2 | 21.3 4.2 | 1625 | W | 270 | 0.00 | 32.85 | 0.239 0.026 | 773 56 | 30 20 |
| Sonoma Valley HS | 5/15/25 | 78.8 3.1 | 1350 | 44.3 1.8 | 0534 | 49.2 0.9 | 100 0 | 37 1 | 2.3 0.4 | 9.2 0.5 | 1944 | SSW | 210 | 0.00 | 0.94 | 0.206 0.023 | 692 52 | 30 20 |
| Sonoma East (Bundschu01) | 5/15/25 | 79.3 2.3 | 1413 | 40.9 1.6 | 0600 | 46.5 1.0 | 97 0 | 32 4 | 3.3 0.7 | 21.5 4.4 | 1457 | WSW | 257 | 0.00 | 17.24 | 0.213 0.026 | 684 66 | 60 20 |
| Schellville (Sasaki) | 5/15/25 | 79.2 2.2 | 1317 | 41.9 0.1 | 0547 | 46.6 0.5 | 95 0 | 32 1 | 4.1 1.2 | 24.6 5.0 | 1931 | S | 188 | 0.00 | 2.46 | - | - | 60 20 |
| Sonoma-SE (Napoli) | 5/15/25 | 80.7 2.5 | 1336 | 41.9 1.3 | 0603 | 46.9 0.8 | 95 0 | 32 2 | 2.5 0.3 | 18.2 3.4 | 1528 | WSW | 237 | 0.00 | 20.31 | - | - | 60 20 |
| Ricci Vineyards (Carneros) | 5/15/25 | 79.9 3.5 | 1345 | 43.1 2.1 | 0619 | 47.7 0.4 | 96 0 | 31 3 | 4.4 1.1 | 20.1 3.9 | 1525 | WNW | 282 | 0.00 | 26.19 | 0.226 0.026 | 708 44 | 40 10 |
| Carneros (Ranch 71) | 5/15/25 | 78.6 2.9 | 1341 | 49.6 2.8 | 0530 | 48.0 0.7 | 94 2 | 31 2 | 5.1 1.5 | 24.8 5.6 | 1515 | W | 259 | 0.00 | 27.24 | 0.229 0.036 | 704 73 | 60 20 |
| Carneros Upper (Ranch 81) | 5/15/25 | 79.6 3.7 | 1406 | 50.5 3.4 | 0610 | 47.7 0.4 | 92 2 | 30 6 | 6.6 1.6 | 25.4 6.2 | 1727 | WSW | 256 | - | - | - | - | 0 0 |
| Carneros Lower (Ranch 81) | 5/15/25 | 82.6 7.2 | 1426 | 43.1 1.6 | 0610 | 48.1 0.3 | 100 0 | 31 8 | 1.1 0.3 | 12.4 0.9 | 1523 | NW | 308 | 0.00 | 24.49 | 0.189 0.021 | 652 65 | 20 20 |
| Rohnert Park-West (Stony Point) | 5/15/25 | 72.0 1.5 | 1553 | 40.2 0.5 | 0555 | 48.3 0.5 | 98 1 | 51 2 | 3.0 0.2 | 16.5 0.1 | 1335 | W | 259 | 0.00 | 21.60 | - | - | 0 0 |
| Cartograph Wines Base | 5/15/25 | 69.2 0.8 | 1528 | 45.4 0.1 | 0554 | 49.3 0.1 | 98 1 | 57 2 | 5.0 1.3 | 24.7 4.9 | 1351 | SW | 232 | 0.00 | 36.50 | 0.175 0.009 | 678 24 | 0 0 |
| Cartograph Wines Remote | 5/15/25 | 71.1 1.6 | 1055 | 41.8 1.0 | 0600 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Rice-Spivak Vineyard | 5/15/25 | 71.3 0.9 | 1532 | 35.4 1.0 | 0558 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Penngrove (Asellus) | 5/15/25 | 74.6 1.9 | 1208 | 40.6 1.7 | 0548 | 46.6 0.7 | 98 1 | 40 4 | 2.4 0.2 | 13.1 0.6 | 1440 | W | 280 | 0.00 | 1.07 | - | - | 0 0 |
| Roger's Creek (Ranch 50) | 5/15/25 | 73.4 1.3 | 1251 | 49.5 3.4 | 0552 | 47.2 0.6 | 90 7 | 37 2 | 5.4 1.2 | 19.6 0.1 | 1508 | WNW | 300 | 0.00 | 31.38 | 0.209 0.020 | 700 45 | 0 0 |
| Petaluma (Ranch 10) | 5/15/25 | 77.9 0.0 | 1530 | 40.8 1.3 | 0537 | 45.8 0.6 | 100 0 | 32 4 | 2.5 0.5 | 13.7 1.2 | 1421 | NW | 310 | 0.00 | 23.63 | 0.207 0.014 | 674 38 | 0 0 |
| Max | 82.6 | - | 50.5 | - | 49.3 | 100 | 57 | 6.6 | 25.4 | - | - | 0.00 | 51.06 | 0.239 | 773 | - | |
| Avg | - | - | - | - | 47.1 | - | - | 3.3 | - | - | - | - | - | - | - | - | |
| Min | 69.2 | - | 35.4 | - | 44.0 | 89 | 18 | 0.0 | 0.0 | - | - | 0.00 | 0.94 | 0.175 | 652 | - |