ROOTED IN REAL DATA Historical data. Thoughtful planning. No weather guarantees.
California · Geographic reference lookup

Your climate reference
near Rosemont.

We connect a real Census place to the nearest agricultural NOAA station, then show the distance and the limitations. This is not a locally validated planting calendar.

CDP · Census 2026
Nearby stations disagree materially on freeze timing.

Inspect the alternatives and their source quality before choosing a historical reference. Proximity alone does not settle the difference.

A reference, not your back garden

3.4 miles W
from the Census reference point.

The line connects Rosemont’s published Census internal point to the weather station. It does not measure terrain, elevation differences or your garden’s microclimate.

5.4 km straight-line distance · Schematic, not a navigation map
N
Census place point Weather station
The nearest reference

Sacramento 5 Ese

Seasonal freeze reference · USW00023271

Full station data
Proximity is not a climate-validation score. Place elevation is unavailable in this Census source, so we cannot verify the elevation difference. The nearest station is never silently replaced by a colder one to create a planting calendar.
Spring median · freezing cold seasonsJan 12
Fall median · freezing cold seasonsDec 16
Modeled annual freeze occurrence81.4%
Uncertainty, made visible

One date never tells
the whole season.

1991–2020 station normals
32°F minimum-temperature threshold

Last spring freeze

Among cold seasons with a freeze: probability of the last occurrence on this date or later.

10%Feb 8
30%Jan 22
50%Jan 12Median reference
70%Dec 31Prior year
90%Dec 18Prior year

The 10% date is later in spring than the median: a more cautious historical reference, still not a guarantee.

First fall freeze

Among cold seasons with a freeze: probability of the first occurrence on this date or earlier.

10%Nov 28
30%Dec 7
50%Dec 16Median reference
70%Dec 28
90%Jan 14Next year

The 10% date is earlier in fall than the median: a more cautious harvest-planning reference.

These percentages are conditional on a cold season containing a 32°F freeze; they are not probabilities across all years. They describe historical climate, not this season’s forecast. The spring and fall probability directions are intentionally different. A garden can be warmer or colder than the reference station.

Check the wider picture

Nearby station comparisons

Differences can signal exposure, elevation, location or data-quality effects.

NOAA referenceDistanceConditional spring medianConditional fall medianStatus
Sacramento 5 Ese3.4 miJan 12Dec 16Seasonal freeze reference
Sacramento Executive AP8.1 miFeb 2Dec 2Seasonal freeze reference
Sacramento Metro AP16.3 miFeb 22Nov 24Seasonal freeze reference

Available alternative-station median spread: spring 41 days; fall 22 days. This is a comparison of source references, not a measure of garden uncertainty.

Date probabilities apply among cold seasons with a 32°F freeze, not all years. Check each station’s annual occurrence and quality before comparing.

Know the geography

A traceable place.

Official Census name
Rosemont CDP
Census GEOID
0662910
Published internal point
38.5477, -121.3554
Land area
11.4 km²
Water area
0.0 km²

The published point is inside the Census geography. It is not your address and does not represent every neighborhood or elevation within the place.

Original Census Gazetteer
From climate to gardening

Make the next
decision locally.

A date window alone cannot tell you which crops are suitable today. Check the current forecast, soil warmth, cultivar maturity and regional extension guidance.

Explore crop-specific evidence Current NWS point forecast Find university extension resources

Find your local climate reference

Choose a state, then search its cities, towns and Census-designated places.

Choose a state to search the national Census place inventory.

    Census places are not ZIP codes. A nearby station is a reference, not a garden-level measurement. Distance and data limitations are shown before any calculation.