| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | RH (%) | Daily 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) | 3/27/26 | 85.7 5.7 | 1516 | 60.6 18.1 | 0542 | 30.9 6.3 | 25 | 52 32 | 10 3 | 3.4 | 19.5 3.8 | 1838 | WSW | 254 | 0.00 | 36.97 | - | - | 100 0 |
| Rockpile Upper (Cooley) | 3/27/26 | 81.7 5.0 | 1542 | 59.6 21.5 | 0101 | 27.4 9.6 | 22 | 44 51 | 10 5 | 5.9 | 19.7 15.1 | 2014 | NW | 322 | 0.00 | 37.66 | 0.215 0.036 | 538 25 | 100 10 |
| Cloverdale-East (Ranch 83) | 3/27/26 | 88.9 5.2 | 1652 | 48.2 0.8 | 0059 | 38.8 0.2 | - | - | - | 5.4 | 21.4 3.7 | 0716 | N | 0 | 0.00 | 30.99 | 0.179 0.015 | 482 29 | 70 10 |
| Cloverdale-SE (Ranch 38) | 3/27/26 | 87.8 2.8 | 1628 | 52.3 5.9 | 0749 | 38.6 0.5 | 38 | 60 20 | 15 4 | 5.6 | 21.5 4.6 | 0333 | NNW | 335 | 0.00 | 32.45 | 0.176 0.006 | 462 23 | 90 10 |
| Geyserville-North (Hoffman) | 3/27/26 | 93.5 4.0 | 1720 | 42.7 2.9 | 0425 | 41.5 0.7 | 54 | 89 3 | 15 2 | 1.9 | 10.7 2.2 | 1754 | WSW | 256 | 0.00 | 25.50 | 0.156 0.010 | 470 5 | 10 10 |
| Geyserville (Ranch 3) | 3/27/26 | 87.5 2.6 | 1620 | 45.5 2.8 | 0352 | 39.3 0.9 | 49 | 86 4 | 12 4 | 2.6 | 11.5 7.6 | 1029 | NW | 315 | 0.00 | 31.63 | 0.166 0.012 | 490 5 | 70 10 |
| Geyserville-East (Ranch 40) | 3/27/26 | 88.0 2.9 | 1505 | 51.3 7.5 | 0719 | 40.0 1.9 | 41 | 65 18 | 14 5 | 2.8 | 17.3 0.3 | 1721 | S | 174 | 0.00 | 32.10 | 0.180 0.012 | 523 6 | 70 10 |
| Geyserville-South (Nervo Station) | 3/27/26 | 86.5 2.4 | 1615 | 47.6 0.7 | 0438 | - | - | - | - | 1.5 | 10.1 11.1 | 1807 | W | 269 | 0.00 | 24.64 | - | - | 70 10 |
| Jimtown-North (Piccolo Ranch 15) | 3/27/26 | 87.8 1.6 | 1641 | 40.5 1.6 | 0522 | 39.1 1.0 | 54 | 92 8 | 13 6 | 1.2 | 9.4 6.2 | 1721 | SSW | 194 | 0.00 | 29.34 | 0.138 0.003 | 444 12 | 90 10 |
| HWY 128/Chalk Hill Rd (Landslide) | 3/27/26 | 88.4 2.9 | 1647 | 40.3 1.2 | 0628 | 41.6 3.0 | 62 | 97 3 | 15 6 | 1.5 | 11.7 3.5 | 1708 | SSW | 203 | 0.00 | 28.06 | 0.143 0.009 | 426 25 | 90 10 |
| N Chalk Hill Rd (Ranch 63) | 3/27/26 | 86.5 3.8 | 1646 | 38.8 2.5 | 0509 | 40.6 2.9 | 62 | 100 0 | 14 7 | 1.3 | 12.1 0.2 | 1704 | S | 181 | 0.00 | 29.61 | 0.142 0.001 | 439 22 | 90 10 |
| Knights Valley (Bavarian Lion) | 3/27/26 | 85.1 3.5 | 1609 | 39.6 6.5 | 0722 | 39.6 6.6 | 54 | 92 6 | 15 7 | 2.2 | 12.0 4.3 | 1714 | WNW | 295 | 0.00 | 27.72 | 0.157 0.021 | 484 32 | 100 10 |
| Upper Dry Creek Valley | 3/27/26 | 89.5 5.9 | 1653 | 42.9 3.7 | 0514 | 40.5 1.9 | 56 | 93 5 | 10 1 | 1.3 | 12.6 4.7 | 1744 | W | 274 | 0.00 | 34.53 | 0.162 0.002 | 522 18 | 100 10 |
| Lower Dry Creek Valley | 3/27/26 | 90.2 4.6 | 1606 | 40.4 4.7 | 0533 | 39.7 0.8 | 57 | 100 8 | 12 0 | 0.7 | 11.0 6.8 | 1756 | SSW | 207 | 0.00 | 33.46 | 0.153 0.002 | 492 6 | 70 10 |
| Max | 93.5 | - | 60.6 | - | 41.6 | 62 | 100 | 15 | 5.9 | 21.5 | - | - | 0.00 | 37.66 | 0.215 | 538 | - | |
| Avg | - | - | - | - | 38.3 | 48 | - | - | 2.7 | - | - | - | - | - | - | - | - | |
| Min | 81.7 | - | 38.8 | - | 27.4 | 22 | 44 | 10 | 0.7 | 9.4 | - | - | 0.00 | 24.64 | 0.138 | 426 | - |
| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | RH (%) | Daily 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) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Windsor-NW (Ranch 8) | 3/27/26 | 88.5 1.6 | 1548 | 45.0 3.8 | 0713 | 44.4 1.8 | 58 | 84 2 | 18 6 | 0.8 | 9.4 0.5 | 1337 | 0.00 | 29.12 | 0.152 0.006 | 498 30 | 60 |
| Windsor-East (Ranch 16) | 3/27/26 | 88.0 3.3 | 1543 | 40.1 4.2 | 0719 | 40.2 0.2 | 59 | 100 8 | 11 1 | 1.5 | 9.6 2.0 | 1625 | 0.00 | 21.96 | 0.161 0.003 | 492 29 | 90 |
| Mark West-North (Ranch 14) | 3/27/26 | 87.2 3.6 | 1546 | 41.6 4.7 | 0708 | 40.7 0.4 | 57 | 96 8 | 11 1 | 1.0 | 8.8 1.0 | 1751 | 0.00 | 23.74 | 0.026 0.006 | 0 0 | 60 |
| Windsor-SE (Silk Rd) | 3/27/26 | 86.7 3.3 | 1544 | 40.3 3.4 | 0708 | 40.6 0.1 | 62 | 97 1 | 13 3 | 1.4 | 12.5 1.4 | 1628 | 0.00 | 21.14 | 0.156 0.002 | 483 34 | 100 |
| Fulton-NW (Ranch 5) | 3/27/26 | 85.1 3.0 | 1551 | 40.6 0.9 | 0704 | 41.3 1.0 | 61 | 97 3 | 13 10 | 1.7 | 10.8 0.3 | 1740 | 0.00 | 23.97 | 0.162 0.002 | 493 33 | 100 |
| Windsor-South (Laughlin Rd) | 2/27/26 | 81.3 4.8 | 1431 | 49.4 1.9 | 0637 | 53.1 42.4 | 74 | 100 0 | 0 0 | - | - | - | 0.00 | 24.07 | - | - | - |
| Fulton-SE (Barnes Rd) | 3/27/26 | 84.5 3.1 | 1510 | 42.7 3.0 | 0448 | 42.4 1.1 | 58 | 93 9 | 18 4 | 1.7 | 11.8 0.2 | 1610 | 0.00 | 23.01 | - | - | 100 |
| Fulton-SW (Ranch 21) | 3/27/26 | 84.3 3.5 | 1520 | 40.9 2.5 | 0631 | 42.3 0.1 | 63 | 95 5 | 16 5 | 2.1 | 11.0 1.5 | 1720 | 0.00 | 23.44 | 0.170 0.004 | 534 22 | 0 |
| NW Santa Rosa (Piner Road) | 3/27/26 | 85.2 4.8 | 1526 | 40.4 3.4 | 0636 | 45.2 0.0 | 69 | 100 0 | 20 7 | 1.6 | 14.1 5.8 | 1533 | 0.00 | 21.90 | - | - | 0 |
| River Rd South (Denner Ranch) | 3/27/26 | 87.0 5.9 | 1506 | 39.3 2.8 | 0719 | 36.6 5.8 | 61 | 100 0 | 0 0 | 2.3 | 15.6 2.8 | 1706 | - | - | - | - | 60 |
| West Santa Rosa (LOV Vineyard) | 3/27/26 | 84.4 4.5 | 1516 | 40.9 3.1 | 0720 | 42.6 0.1 | 64 | 96 1 | 14 8 | 1.5 | 12.8 0.3 | 1651 | 0.00 | 16.83 | 0.036 0.003 | 3 5 | 70 |
| Guerneville Rd (Prokopakis) | 3/27/26 | 85.7 3.2 | 1518 | 42.0 3.3 | 0713 | 42.3 1.1 | 62 | 97 1 | 15 6 | - | - | - | 0.00 | 23.06 | - | - | 80 |
| Guerneville Rd West (Balletto) | 3/27/26 | 84.5 4.4 | 1504 | 39.6 3.5 | 0510 | 43.6 0.0 | 67 | 98 1 | 17 8 | 2.0 | 13.3 3.4 | 1629 | 0.00 | 22.55 | - | - | 0 |
| Sanchietti Ranch | 3/27/26 | 83.7 4.6 | 1450 | 40.9 3.7 | 0642 | 46.5 1.1 | - | 97 1 | 27 6 | 2.3 | 12.3 2.4 | 1554 | 0.00 | 23.50 | - | - | 0 |
| Occidental Rd (Sebastopol) | 3/27/26 | 84.2 5.2 | 1456 | 39.2 2.9 | 0720 | 48.2 0.6 | 79 | 100 0 | 28 5 | 1.9 | 13.8 3.7 | 1625 | 0.00 | 6.96 | - | - | 0 |
| Lower Westside Rd (Ranch 12) | 3/27/26 | 87.6 2.5 | 1535 | 41.2 4.2 | 0646 | 40.8 0.5 | 60 | 94 1 | 12 2 | 1.0 | 11.8 2.7 | 1610 | 0.00 | 28.30 | - | - | 90 |
| Guerneville (Laughlin Rd) | 3/27/26 | 85.6 5.0 | 1343 | 39.0 3.6 | 0438 | 40.0 0.4 | 62 | 97 1 | 14 1 | 1.3 | 13.8 2.1 | 1519 | 0.00 | 39.24 | - | - | 100 |
| Korbel (Winery) | 3/27/26 | 85.1 3.2 | 1438 | 41.9 3.3 | 0722 | 41.0 0.3 | 61 | 96 0 | 15 2 | 1.0 | 16.4 6.4 | 1519 | 0.00 | 36.61 | - | - | 100 |
| Forestville (Shone Farms) | 3/27/26 | 86.8 3.2 | 1551 | 43.0 4.6 | 0448 | 40.5 1.0 | 55 | 91 2 | 14 4 | 1.5 | 13.2 0.1 | 1635 | 0.00 | 30.31 | 0.153 0.001 | 466 39 | 100 |
| Forestville-NE (Ranch 30) | 3/27/26 | 86.2 0.9 | 1536 | 41.9 3.9 | 0446 | 43.4 0.9 | 64 | 97 1 | 19 4 | 1.5 | 12.9 1.2 | 1551 | 0.00 | 28.46 | 0.157 0.001 | 484 33 | 90 |
| Green Valley Vineyard | 3/27/26 | 83.2 1.7 | 1449 | 44.1 5.3 | 0510 | 39.5 1.2 | 54 | 88 7 | 13 0 | 2.2 | 14.9 2.8 | 1805 | 0.00 | 35.04 | 0.046 0.001 | 10 42 | 100 |
| Green Valley (Sanchietti) | 3/27/26 | 86.6 2.2 | 1456 | 38.0 5.2 | 0659 | - | - | - | - | - | - | - | - | - | - | - | 100 |
| Keefer Ranch (Green Valley) | 3/27/26 | 84.4 3.1 | 1448 | 39.3 4.6 | 0712 | 41.7 0.7 | 65 | 98 0 | 17 2 | - | - | - | 0.00 | 31.31 | - | - | 100 |
| Graton-South (Mill Station Rd) | 3/27/26 | 82.0 7.0 | 1403 | 38.4 3.3 | 0712 | 42.4 0.6 | 65 | 98 1 | 18 10 | 0.5 | 8.4 1.5 | 1629 | 0.00 | 27.62 | - | - | 100 |
| Occidental (Horseshoe Bend) | 3/27/26 | 81.6 5.8 | 1518 | 49.0 5.9 | 0010 | 39.5 0.8 | - | 85 0 | 17 5 | - | - | - | 0.00 | 32.10 | - | - | 80 |
| Sexton Valley (Jacqueline's Blk) | 3/27/26 | 81.3 6.6 | 1405 | 40.8 3.9 | 0740 | 44.6 0.2 | 68 | 99 0 | 23 14 | 1.4 | 11.1 1.1 | 1515 | 0.00 | 15.31 | - | - | 100 |
| Sebastopol Hills (Burnside Rd) | 3/27/26 | 78.6 6.6 | 1344 | 49.7 5.0 | 0044 | 44.5 2.0 | 56 | 88 3 | 22 14 | 2.0 | 13.1 2.2 | 1619 | 0.00 | 27.89 | - | - | 0 |
| Seaview/Fort Ross (Hirsch) | 3/27/26 | 75.1 4.4 | 1129 | 63.7 20.4 | 0201 | 27.2 9.6 | 22 | 37 42 | 9 15 | 2.0 | 8.7 5.0 | 1411 | 0.00 | 48.40 | 0.166 0.009 | 535 22 | 70 |
| Max | 88.5 | - | 63.7 | - | 48.2 | 79 | 100 | 28 | 2.3 | 16.4 | - | 0.00 | 48.40 | 0.170 | 535 | - | |
| Avg | - | - | - | - | 41.6 | 61 | - | - | 1.6 | - | - | - | - | - | - | - | |
| Min | 75.1 | - | 38.0 | - | 27.2 | 22 | 37 | 0 | 0.5 | 8.4 | - | 0.00 | 6.96 | 0.026 | 0 | - |
| Station | Date | Daily Max Temp (°F) | Time of Max Temp | Daily Min Temp (°F) | Time of Min Temp | Dew Pt (°F) | Daily 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 | 3/27/26 | 81.1 2.2 | 1600 | 55.1 13.5 | 0513 | 34.7 4.1 | 48 39 | 17 5 | 2.7 0.4 | 11.4 0.1 | 1641 | SE | 138 | 0.00 | 5.41 | 0.168 0.010 | 519 28 | 50 10 |
| Lower Bennett Valley | 3/27/26 | 81.9 3.7 | 1537 | 37.9 3.6 | 0528 | 42.5 0.7 | 100 0 | 21 6 | 1.5 0.1 | 13.0 4.6 | 1831 | E | 99 | 0.00 | 22.06 | 0.150 0.006 | 475 23 | 0 0 |
| Kenwood (Wildwood) | 3/27/26 | 84.5 2.7 | 1407 | 41.8 2.6 | 0624 | 41.0 0.6 | 91 4 | 18 5 | 2.8 0.3 | 15.7 4.6 | 1733 | NNW | 341 | 0.00 | 26.90 | 0.147 0.000 | 435 46 | 100 0 |
| Sonoma Valley (Bedrock) | 3/27/26 | 81.4 0.5 | 1413 | 41.1 1.2 | 0629 | 38.6 0.5 | 88 1 | 17 6 | - | - | - | - | 0.00 | 23.11 | - | - | 100 0 |
| Sonoma-West (Arnold) | 3/27/26 | 84.3 5.0 | 1534 | 39.6 3.3 | 0604 | 40.9 2.9 | 94 2 | 17 11 | 2.0 0.1 | 14.2 1.6 | 1748 | W | 278 | 0.00 | 17.20 | 0.173 0.003 | 535 38 | 100 0 |
| Sonoma Valley HS | 3/27/26 | 81.8 2.9 | 1428 | 42.4 2.6 | 0705 | 44.9 1.8 | 100 0 | 25 9 | 1.3 0.1 | 8.7 0.2 | 1822 | W | 259 | 0.00 | 5.29 | 0.153 0.005 | 497 24 | 80 20 |
| Sonoma East (Bundschu01) | 3/27/26 | 81.0 1.5 | 1658 | 40.0 2.7 | 0708 | 42.6 1.2 | 92 3 | 21 6 | 2.0 0.1 | 12.7 2.4 | 1422 | S | 170 | 0.00 | 17.48 | 0.166 0.014 | 527 2 | 80 20 |
| Schellville (Sasaki) | 2/4/26 | 70.2 | 1502 | 39.9 | 0001 | 48.4 | 98 | 51 | 2.9 | 11.8 | 1113 | NE | 34 | 0.00 | 0.00 | - | - | 0 |
| Sonoma-SE (Napoli) | 3/27/26 | 82.6 1.6 | 1701 | 40.0 2.4 | 0543 | 42.7 1.1 | 93 1 | 19 10 | 1.2 0.3 | 11.5 1.7 | 1434 | SSE | 163 | 0.00 | 14.95 | - | - | 0 0 |
| Ricci Vineyards (Carneros) | 3/27/26 | 83.1 2.5 | 1704 | 41.0 2.5 | 0717 | 41.7 1.6 | 94 1 | 19 5 | 3.3 0.6 | 15.0 6.0 | 1740 | W | 275 | 0.00 | 18.75 | 0.184 0.025 | 551 7 | 0 0 |
| Carneros (Ranch 71) | 3/27/26 | 82.3 2.6 | 1649 | 51.2 5.9 | 0525 | 41.4 2.2 | 72 15 | 21 7 | 2.6 0.2 | 15.4 5.6 | 1754 | W | 274 | 0.00 | 16.20 | 0.171 0.016 | 520 3 | 50 20 |
| Carneros Upper (Ranch 81) | 3/27/26 | 83.1 1.6 | 1709 | 53.0 6.6 | 0708 | 39.7 3.5 | - | - | 4.1 0.5 | 19.0 5.7 | 1811 | W | 260 | - | - | - | - | 100 20 |
| Carneros Lower (Ranch 81) | 3/27/26 | 83.5 0.4 | 1642 | 43.1 3.8 | 0656 | 43.3 0.8 | 100 0 | 24 24 | 1.2 0.1 | 10.6 0.1 | 1402 | SSE | 158 | 0.00 | 16.94 | 0.128 0.006 | 405 8 | 0 0 |
| Rohnert Park-West (Stony Point) | 3/27/26 | 80.6 7.9 | 1445 | 37.0 1.6 | 0705 | 44.3 0.2 | 98 0 | 28 16 | 1.6 0.4 | 17.8 4.9 | 1641 | WSW | 251 | 0.00 | 6.33 | - | - | 0 0 |
| Cartograph Wines Base | 3/27/26 | 80.0 10.2 | 1428 | 46.4 0.3 | 0719 | 45.7 1.0 | 94 8 | 27 17 | 3.3 0.1 | 21.3 5.6 | 1556 | SW | 236 | 0.00 | 22.43 | 0.154 0.015 | 485 29 | 0 0 |
| Cartograph Wines Remote | 3/27/26 | 78.0 7.8 | 1311 | 40.9 2.7 | 0717 | - | - | - | - | - | - | - | - | - | - | - | 0 10 |
| Rice-Spivak Vineyard | 3/27/26 | 79.8 8.7 | 1431 | 34.2 4.1 | 0708 | - | - | - | - | - | - | - | - | - | - | - | 0 0 |
| Penngrove (Asellus) | 3/27/26 | 82.9 9.0 | 1501 | 38.0 2.2 | 0619 | 42.2 0.2 | 97 1 | 21 15 | 1.4 0.1 | 9.9 3.2 | 1551 | W | 271 | 0.00 | 45.71 | - | - | 0 0 |
| Petaluma (Ranch 10) | 3/27/26 | 85.8 6.8 | 1555 | 38.0 1.8 | 0623 | 41.5 0.0 | 95 5 | 20 9 | 1.2 0.3 | 12.4 2.0 | 1635 | NW | 321 | 0.00 | 15.67 | 0.148 0.001 | 475 12 | 80 10 |
| Max | 85.8 | - | 55.1 | - | 45.7 | 100 | 28 | 4.1 | 21.3 | - | - | 0.00 | 45.71 | 0.184 | 551 | - | |
| Avg | - | - | - | - | 41.7 | - | - | 2.2 | - | - | - | - | - | - | - | - | |
| Min | 78.0 | - | 34.2 | - | 34.7 | 48 | 17 | 1.2 | 8.7 | - | - | 0.00 | 5.29 | 0.128 | 405 | - |