Winter
Dec → Feb6 to 8°
nights -8 to -7°
- 5 rainy days · 52 mm
When is the best time to visit Flagstaff?
- Jan6°not recommended
- Feb8°not recommended
- Mar11°not recommended
- Apr15°fair
- May20°recommended
- Jun26°recommended
- Jul28°fair
- Aug26°fair
- Sep23°recommended
- Oct18°recommended
- Nov11°fair
- Dec6°not recommended
RecommendedFairNot recommended· afternoon temperature
The weather in Flagstaff, month by month
The table of averages, month by month
| Month | High | Low | Rainfall | Rainy days | Best |
|---|---|---|---|---|---|
| January | 6° | -8° | 52 mm | 5 d | |
| February | 8° | -7° | 55 mm | 6 d | |
| March | 11° | -5° | 48 mm | 5 d | |
| April | 15° | -2° | 23 mm | 3 d | |
| May | 20° | 1° | 20 mm | 3 d | ✓ |
| June | 26° | 6° | 8 mm | 1 d | ✓ |
| July | 28° | 11° | 66 mm | 8 d | |
| August | 26° | 10° | 77 mm | 10 d | |
| September | 23° | 6° | 47 mm | 5 d | ✓ |
| October | 18° | 0° | 39 mm | 4 d | ✓ |
| November | 11° | -5° | 39 mm | 4 d | |
| December | 6° | -8° | 48 mm | 5 d |
The four seasons in Flagstaff, in figures
What the 2015-2024 averages (Flagstaff Pulliam Airport) show, season by season, to compare at a glance instead of reading twelve rows of a table.
Spring
Mar → May11 to 20°
nights -5 to 1°
- 4 rainy days · 30 mm
Summer
Jun → Aug26 to 28°
nights 6 to 11°
- 6 rainy days · 50 mm
Autumn
Sep → Nov11 to 23°
nights -5 to 6°
- 4 rainy days · 42 mm
Book early for May to June and September to October
The timing is right, so it is right for everyone: in these months the best places to stay and the small-group tours go first. Here is where to start.
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Daylight in Flagstaff, month by month
The time between sunrise and sunset, from shortest to longest. Not to be confused with the sunshine hours in the table above, which count clear skies. In June there are 14h31 of daylight, in December 9h48, a difference of 4h43.
10h02Jan
10h52Feb
11h52Mar
13h02Apr
14hMay
14h31Jun
14h18Jul
13h28Aug
12h21Sep
11h14Oct
10h16Nov
9h48Dec
Calculated for the latitude of the reference point "Flagstaff Pulliam Airport" (35.14°). Values on the 15th of each month, local solar time.
What to do in Flagstaff, month by month
| Activity | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sightseeing & walks | ||||||||||||
| Long days |
favourablewith compromisesunfavourable
- Sightseeing & walks: February, March, April, May, June, July, August, September, October, November
- Long days: June, July
Grid derived from the climate averages (temperature, rainfall), not from an opinion.
Travelling off-peak
Month by month, in detail
January
Not recommended6°-8° at night
- 52 mm · 5 d
Low season, lower prices
February
Not recommended8°-7° at night
- 55 mm · 6 d
Low season, lower prices
March
Not recommended11°-5° at night
- 48 mm · 5 d
Low season, lower prices
April
Fair15°-2° at night
- 23 mm · 3 d
Low season, lower prices
May
Recommended20°1° at night
- 20 mm · 3 d
Busy, without the crush
June
Recommended26°6° at night
- 8 mm · 1 d
Busy, without the crush
July
Fair28°11° at night
- 66 mm · 8 d
Busy, without the crush
August
Fair26°10° at night
- 77 mm · 10 d
Busy, without the crush
September
Recommended23°6° at night
- 47 mm · 5 d
Busy, without the crush
October
Recommended18°0° at night
- 39 mm · 4 d
Busy, without the crush
November
Fair11°-5° at night
- 39 mm · 4 d
Low season, lower prices
December
Not recommended6°-8° at night
- 48 mm · 5 d
Quiet, then the holidays
Read the twelve months in detail
January. Deep winter: 6 °C at the warmest of the day, -8 °C at night. Rain stays light: 52 mm over 5 days. Low season: fewer people, lower prices.
February. Cool: 8 °C at best, -7 °C at night. Rain stays light: 55 mm over 6 days. Low season: fewer people, lower prices.
March. Cool: 11 °C at best, -5 °C at night. Rain stays light: 48 mm over 5 days. Low season: fewer people, lower prices.
April. Cool: 15 °C at best, -2 °C at night. Hardly any rain (23 mm over 3 days). Low season: fewer people, lower prices.
May. Mild, 20 °C in the afternoon and 1 °C early in the morning. Hardly any rain (20 mm over 3 days). Busy season, without the crush.
June. 26 °C in the afternoon and 6 °C at night. Hardly any rain (8 mm over 1 day). Busy season, without the crush.
July. 28 °C in the afternoon and 11 °C at night. Expect 8 days of rain in the month (66 mm). Busy season, without the crush.
August. 26 °C in the afternoon and 10 °C at night. Expect 10 days of rain in the month (77 mm). Busy season, without the crush.
September. Mild, 23 °C in the afternoon and 6 °C early in the morning. Rain stays light: 47 mm over 5 days. Busy season, without the crush.
October. Mild, 18 °C in the afternoon and 0 °C early in the morning. Rain stays light: 39 mm over 4 days. Busy season, without the crush.
November. Cool: 11 °C at best, -5 °C at night. Rain stays light: 39 mm over 4 days. Low season: fewer people, lower prices.
December. Deep winter: 6 °C at the warmest of the day, -8 °C at night. Rain stays light: 48 mm over 5 days. Quiet at the start of the month, then busier as the holidays approach.
Same season, other ideas
Their best time overlaps with this one: worth comparing before you book.
Frequently asked questions
When is the best time to visit Flagstaff?
May to June and September to October: over these months, average highs range from 18 to 26 °C, with 3 days of rain a month on average (2015-2024 averages, Flagstaff Pulliam Airport).
Which month should you avoid in Flagstaff?
February: it is the wettest of the months to avoid, with 55 mm over 6 days of rain on average over 2015-2024 at the reference point (Flagstaff Pulliam Airport).
What is the hottest month in Flagstaff?
July, with 28 °C on average in the afternoon and 11 °C at night. 2015-2024 averages (Flagstaff Pulliam Airport).
What is the coldest month in Flagstaff?
January, with 6 °C at best during the day and -8 °C at night. 2015-2024 averages (Flagstaff Pulliam Airport).
What is the driest month in Flagstaff?
June: 8 mm over 1 day of rain, against 77 mm in August, the wettest month.
Does it get cold at night in Flagstaff?
The gap between day and night reaches 20 °C in June: 26 °C in the afternoon, 6 °C at dawn. Pack an extra layer, even in high season.
Plan this trip
📒 The free printable Flagstaff guide: itinerary, map, where to sleep→
🧭 When to visit the American West: the country overview→
🗓️ Best time to visit: all our destinations→
Compare with other destinations
Photos: Packbj / CC BY-SA 4.0 (Wikimedia Commons) · teofilo / CC BY 2.0 (Wikimedia Commons) · Coconino National Forest / Public domain (Wikimedia Commons) · Cbaile19 / CC0 (Wikimedia Commons) · Bobjgalindo / CC BY 4.0 (Wikimedia Commons) · Tabbyblake / CC BY-SA 4.0 (Wikimedia Commons) · Mukhtiaraliunar / CC BY-SA 4.0 (Wikimedia Commons)