There are variations in gardening conditions even within a local area depending on elevation, proximity to lakes or ocean, topography, and wind patterns. This page has links to resources that let you find information for your zip code or even the nearest weather station.
Average first and last frost dates are essential in most areas for determining planting dates. Use this hardiness zone map by PlantMaps to find the average first and last frost dates for your zipcode.
Enter a zip code in the search box at the top and click "Zoom to Zip". A box will pop up with information including the average first frost and average last frost dates. This is critical in most areas for determining planting dates.
These pages by "Find the Best" let you find average high and low temperatures for each month of the year and annual rainfall.
Enter a town, city, or zip code to see average temperatures for an area. Then click "See Details" next to a name to see a chart of average high and low temperatures for each month.
Enter a town ,city, or zip code to see average yearly rainfall for your area.
Some plant species, such as fruit and nut trees, require a minimum number of chill hours per year to do well. It's important to know the average chill hours for your area when deciding which types and varieties to plant. The local chill hour calculator below will help you determine the chill hours at your location.
To determine the chill hours for your location, first find your location on the Weather Underground "Wundermap" linked below. Click the bubble of the closest station and write down the Station ID shown at the top (for example, KCALAKES1).
In the Chill Hour Calculator linked below, enter the Station ID, start and end dates. These will default to the dates typically used for chill hour calculations in your area. Click "Calculate Chill". *** Note that it sometimes runs quickly and sometimes takes a very long time to run. The white bar under the button shows the progress with a gray line.
The calculator will show average the chill hours for the Station.