The year at a glance
Averages from 30 years of climate history, 1991-2020
| Ione | Metric | Wilton |
|---|---|---|
| 268 days | Sunny daysclear or partly cloudy skies | 267 days |
| 27 in | Precipitationper year | 26 in |
| 60 days | Wet daysrain or snow per year | 60 days |
| 0 in | Snowfallper year | 0 in |
| 80 days | Hot daysabove 90 °F | 83 days |
| 11 days | Freezing nightsat or below 32 °F | 9 days |
| 62% | Humidityaverage relative | 63% |
| 62 °F | Average temperatureyear round | 63 °F |
Monthly temperatures
Average daily high and low for each month, in °F. The gap between the two lines is what an ordinary day feels like across the year.
Daily highs
Daily lows
View monthly temperatures as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ione high | 55 | 59 | 63 | 68 | 77 | 87 | 94 | 93 | 87 | 77 | 64 | 55 |
| Wilton high | 56 | 62 | 67 | 73 | 81 | 89 | 94 | 93 | 89 | 79 | 65 | 56 |
| Ione low | 40 | 42 | 44 | 46 | 52 | 58 | 63 | 62 | 60 | 53 | 45 | 40 |
| Wilton low | 40 | 43 | 46 | 48 | 53 | 58 | 60 | 60 | 58 | 52 | 44 | 40 |
Monthly precipitation
Total rain plus melted snow for each month, in inches. Taller bars mean wetter months.
View monthly precipitation as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ione | 5.1 | 5.0 | 4.4 | 2.2 | 1.3 | 0.3 | 0.0 | 0.0 | 0.1 | 1.5 | 2.7 | 4.9 |
| Wilton | 4.9 | 4.8 | 4.1 | 1.9 | 1.1 | 0.2 | 0.0 | 0.1 | 0.1 | 1.4 | 2.6 | 4.8 |
Monthly sunny days
Days each month with clear or partly cloudy skies, so compare the same month between cities.
View monthly sunny days as a table
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ione | 15 | 14 | 17 | 20 | 24 | 27 | 30 | 30 | 29 | 26 | 20 | 16 |
| Wilton | 14 | 14 | 17 | 20 | 24 | 27 | 30 | 30 | 29 | 27 | 19 | 16 |
Keep comparing
Nearby cities and popular picks for each side of this matchup. Any two cities can be compared from the home page.
Ione vs another city
- Ione vs Jackson, CA
- Ione vs Rancho Murieta, CA
- Ione vs Rancho Calaveras, CA
- Ione vs Galt, CA
- Ione vs Rancho Cordova, CA
- Ione vs New York, NY
- Ione vs Los Angeles, CA
- Ione vs Chicago, IL
- Ione vs Houston, TX
- Ione vs Phoenix, AZ
- Ione vs Philadelphia, PA
Wilton vs another city
- Wilton vs Vineyard, CA
- Wilton vs Elk Grove, CA
- Wilton vs Rancho Murieta, CA
- Wilton vs Galt, CA
- Wilton vs Rancho Cordova, CA
- Wilton vs Florin, CA
- Wilton vs New York, NY
- Wilton vs Los Angeles, CA
- Wilton vs Chicago, IL
- Wilton vs Houston, TX
- Wilton vs Phoenix, AZ
- Wilton vs Philadelphia, PA
About this data
Every figure on this page is a 30 year average computed from daily climate history for 1991-2020, using each city's own coordinates. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.
Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).