Flagstaff, Arizona 7 Day Weather Forecast

Wx Forecast - Wx Discussion - Wx Aviation

303
FXUS65 KFGZ 191651
AFDFGZ

Area Forecast Discussion
National Weather Service Flagstaff AZ
951 AM MST Thu Mar 19 2026

.SYNOPSIS...Arizona will roast under a summer-like high pressure
cell, with temperatures reaching 20 to 30 degrees above normal for
the remainder of this week and into the weekend. Please exercise
appropriate precautions if you are planning on any outdoor activity
through the weekend.

&&

.DISCUSSION...An anomaly of a high pressure cell will center over
Arizona today and Friday, before slightly weakening over this
weekend. The ridge flattens out a bit early next week, but may
amplify again later in the week.

Expect record breaking temperatures to persist, perhaps all the way
through the forecast period. However, today through Friday will be
the warmest days.

&&

.AVIATION...Thursday 19/18Z through Friday 20/18Z...VFR
conditions, no precipitation expected. Winds light and variable
5-10kts daytime, light and variable or terrain driven, especially
at KSEZ with winds NE 10-15kts between 03Z-15Z.

OUTLOOK...Friday 20/18Z through Sunday 22/18Z...VFR conditions, no
precipitation expected. Daytime winds SW-W 5-15kts Friday, SW
15-25kts Saturday. Light and variable or terrain driven overnight.

&&

.FIRE WEATHER...Thursday and Friday...Dry and historically warm.
Daytime temperatures 20-30 degrees above normal each day, with large
diurnal swings at night. West through southwest winds 5 to 15 mph
each afternoon.

Saturday through Monday...Very dry with historically warm daytime
temperatures. Expect temperatures to decrease slightly by Sunday or
Monday, but still remain at least 20 degrees above normal. Southwest
winds 15 to 25 mph Saturday, decreasing to 10 to 20 mph and turning
more west-southwest for Sunday and Monday. Dry conditions, combined
with historically warm temperatures and increased wind speeds, may
contribute to enhanced fire weather concerns during this period.

&&

.FGZ WATCHES/WARNINGS/ADVISORIES...
Extreme Heat Warning until 8 PM MST Sunday for AZZ006-037.

&&

$$

PUBLIC...Peterson
AVIATION...Bernhart
FIRE WEATHER...Peterson

For Northern Arizona weather information visit
weather.gov/flagstaff