PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BILLINGS MT
408 AM MDT TUE MAY 5 2009

...AVERAGE LAST AND LATEST SPRING FROST AND FREEZE DATES...

WITH THE SPRING GROWING SEASON STARTING TO TAKE SHAPE...MANY
PEOPLE ARE STARTING TO THINK ABOUT PLANTING THEIR GARDENS ACROSS
THE AREA. ONE IMPORTANT THING TO KEEP IN MIND IS THE AVERAGE LAST
AND LATEST FROST AND FREEZE DATES IN ORDER TO PROTECT THE PLANTS.
HERE ARE THE AVERAGE LAST AND LATEST FROST AND FREEZE DATES FOR
THE BILLINGS AIRPORT...MILES CITY AIRPORT AND THE SHERIDAN
AIRPORT. THE FREEZING TEMPERATURE IS BASED ON 32 DEGREES
FAHRENHEIT AND THE FROST TEMPERATURES IS BASED ON 36 DEGREES
FAHRENHEIT.

THE AVERAGE LAST DATES ARE BASED ON A 30 YEAR AVERAGE CALCULATED
FROM 1971 TO 2000. THE LATEST DATES ARE THE LATEST OCCURRENCES OF
A FROST OR FREEZE SINCE 1934 IN BILLINGS...1937 IN MILES CITY AND
1934 IN SHERIDAN.


...BILLINGS...

AVERAGE LAST FREEZE DATE    MAY 4
LATEST FREEZE ON RECORD     JUNE 13

AVERAGE LAST FROST DATE     MAY 14
LATEST FROST ON RECORD      JUNE 13


...MILES CITY...

AVERAGE LAST FREEZE DATE    MAY 6
LATEST FREEZE ON RECORD     JUNE 8

AVERAGE LAST FROST DATE     MAY 14
LATEST FROST ON RECORD      JUNE 18


...SHERIDAN...

AVERAGE LAST FREEZE DATE    MAY 18
LATEST FREEZE ON RECORD     JUNE 24

AVERAGE LAST FROST DATE     JUNE 7
LATEST FROST ON RECORD      JULY 30

Webmaster
US Dept of Commerce
National Oceanic and Atmospheric Administration
National Weather Service
Billings Weather Forecast Office
2170 Overland Avenue
Billings, Montana 59102-6455

Tel: (406)652-0851