How many sunny days does Flagstaff have per year?

Flagstaff averages approximately 320 sunny days per year, based on historical climate data.

What is the air quality in Flagstaff?

Flagstaff has an annual PM2.5 concentration of 4.8 µg/m³, classified as "Excellent" by WHO standards. Meets WHO guideline. Minimal health risk.

Arizona

Flagstaff · United States

A city in the United States.

Photo by Jacob Stone on Unsplash

Small city

70K

2,108m

17:09 UTC-7

USD

Explore on map →Climate twin →

Flagstaff, United States is a 70K-resident city with 320 sunny days and 137 frost days annually and an annual PM2.5 of 4.8 µg/m³. A city in the United States.

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Climate

Feels-like °C

-1

-2

Dinner outside

Climate Lab · Flagstaff

Monthly climate metrics across temperature, precipitation, wind, and UV.

Metric	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Temperature
Daily high°C	6	8	11	18	23	28	30	27	26	21	15	9	19
Daily mean°C	1	2	3	10	18	23	25	22	19	14	6	2	12
Daily low°C	-5	-4	-2	3	10	16	17	16	12	4	-2	-4	5
Thermal comfort
High feelsDaily high feels-like°C	15	15	14	21	25	30	32	30	29	26	19	15	22
Mean feelsDaily mean feels-like°C	-1	-1	2	10	16	24	26	25	21	13	4	-2	11
Low feelsDaily low feels-like°C	-17	-15	-12	-4	4	13	16	15	9	-1	-11	-15	-1
Humidity
HumidityRelative humidity%	56	46	53	36	16	20	30	46	39	34	43	46	39
Dewpoint°C	-7.0	-8.4	-5.3	-4.6	-7.9	-2.5	6.8	10.3	4.1	-1.3	-6.2	-7.9	-2.5
Precipitation
Rainfallmm	11	3	48	14	8	24	87	91	54	32	16	5	393
Rain days≥1mm	2	2	8	5	2	5	12	19	9	4	2	3	73
Snowfallmm	29	26	48	1	0	0	0	0	0	2	10	9	123
Snow days≥1mm	5	2	6	0	0	0	0	0	0	1	2	2	18
Wind
Wind avgm/s	2.2	2.7	3.1	3.3	3.3	3.2	1.9	2.2	2.0	2.1	2.2	2.2	2.5
Wind gustsm/s	4.6	6.5	6.6	7.1	7.1	7.1	4.7	5.1	4.9	5.8	6.1	5.2	5.9
Sun & UV
Sunshinehrs/day	8.2	9.2	9.7	11.6	12.2	12.1	11.3	10.8	10.2	9.7	9.5	8.6	10.3
Clear skyindex	53%	69%	57%	75%	74%	68%	60%	56%	66%	73%	74%	58%	65%
UV indexmax avg	3.0	4.6	6.6	8.7	9.8	10.6	10.5	9.4	8.2	6.2	3.8	2.8	7.0

Based on 2014–2024 hourly climate data · Updated Mar 2025

Confidence: High

Lifestyle Calendar · Flagstaff

Flagstaff offers a solid outdoor season. 3 months of the year are perfect for all activities. Dinner outside works 4/12 months, while walking is comfortable 12/12 months — impressive.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

4/12

Dinner Outside

0Jan: 0% viability

1Feb: 1% viability

4Mar: 4% viability

22Apr: 22% viability

46May: 46% viability

83Jun: 83% viability

91Jul: 91% viability

89Aug: 89% viability

74Sep: 74% viability

25Oct: 25% viability

1Nov: 1% viability

0Dec: 0% viability

4/12

Dinner Outside

0Jan: 0% viability

1Feb: 1% viability

4Mar: 4% viability

22Apr: 22% viability

46May: 46% viability

83Jun: 83% viability

91Jul: 91% viability

89Aug: 89% viability

74Sep: 74% viability

25Oct: 25% viability

1Nov: 1% viability

0Dec: 0% viability

36%

Cold

9/12

Lunch Outside

65Jan: 65% viability

64Feb: 64% viability

53Mar: 53% viability

75Apr: 75% viability

82May: 82% viability

81Jun: 81% viability

69Jul: 69% viability

71Aug: 71% viability

82Sep: 82% viability

85Oct: 85% viability

74Nov: 74% viability

64Dec: 64% viability

9/12

Lunch Outside

65Jan: 65% viability

64Feb: 64% viability

53Mar: 53% viability

75Apr: 75% viability

82May: 82% viability

81Jun: 81% viability

69Jul: 69% viability

71Aug: 71% viability

82Sep: 82% viability

85Oct: 85% viability

74Nov: 74% viability

64Dec: 64% viability

72%

Cold

12/12

Walking

99Jan: 99% viability

96Feb: 96% viability

97Mar: 97% viability

95Apr: 95% viability

92May: 92% viability

91Jun: 91% viability

66Jul: 66% viability

85Aug: 85% viability

95Sep: 95% viability

97Oct: 97% viability

98Nov: 98% viability

98Dec: 98% viability

12/12

Walking

99Jan: 99% viability

96Feb: 96% viability

97Mar: 97% viability

95Apr: 95% viability

92May: 92% viability

91Jun: 91% viability

66Jul: 66% viability

85Aug: 85% viability

95Sep: 95% viability

97Oct: 97% viability

98Nov: 98% viability

98Dec: 98% viability

92%

Heat

11/12

Running

99Jan: 99% viability

96Feb: 96% viability

97Mar: 97% viability

95Apr: 95% viability

91May: 91% viability

89Jun: 89% viability

59Jul: 59% viability

82Aug: 82% viability

92Sep: 92% viability

97Oct: 97% viability

98Nov: 98% viability

98Dec: 98% viability

11/12

Running

99Jan: 99% viability

96Feb: 96% viability

97Mar: 97% viability

95Apr: 95% viability

91May: 91% viability

89Jun: 89% viability

59Jul: 59% viability

82Aug: 82% viability

92Sep: 92% viability

97Oct: 97% viability

98Nov: 98% viability

98Dec: 98% viability

91%

Heat

Tap any month for details · Click activity name for overview

ComfortableModerateUncomfortable

Based on 2014–2024 hourly climate data · Updated Mar 2025

Confidence: High

Climate

Feels-like °C

-1

-2

Dinner outside

Climate Lab · Flagstaff

Monthly climate metrics across temperature, precipitation, wind, and UV.

Metric	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec	Year
Temperature
Daily high°C	6	8	11	18	23	28	30	27	26	21	15	9	19
Daily mean°C	1	2	3	10	18	23	25	22	19	14	6	2	12
Daily low°C	-5	-4	-2	3	10	16	17	16	12	4	-2	-4	5
Thermal comfort
High feelsDaily high feels-like°C	15	15	14	21	25	30	32	30	29	26	19	15	22
Mean feelsDaily mean feels-like°C	-1	-1	2	10	16	24	26	25	21	13	4	-2	11
Low feelsDaily low feels-like°C	-17	-15	-12	-4	4	13	16	15	9	-1	-11	-15	-1
Humidity
HumidityRelative humidity%	56	46	53	36	16	20	30	46	39	34	43	46	39
Dewpoint°C	-7.0	-8.4	-5.3	-4.6	-7.9	-2.5	6.8	10.3	4.1	-1.3	-6.2	-7.9	-2.5
Precipitation
Rainfallmm	11	3	48	14	8	24	87	91	54	32	16	5	393
Rain days≥1mm	2	2	8	5	2	5	12	19	9	4	2	3	73
Snowfallmm	29	26	48	1	0	0	0	0	0	2	10	9	123
Snow days≥1mm	5	2	6	0	0	0	0	0	0	1	2	2	18
Wind
Wind avgm/s	2.2	2.7	3.1	3.3	3.3	3.2	1.9	2.2	2.0	2.1	2.2	2.2	2.5
Wind gustsm/s	4.6	6.5	6.6	7.1	7.1	7.1	4.7	5.1	4.9	5.8	6.1	5.2	5.9
Sun & UV
Sunshinehrs/day	8.2	9.2	9.7	11.6	12.2	12.1	11.3	10.8	10.2	9.7	9.5	8.6	10.3
Clear skyindex	53%	69%	57%	75%	74%	68%	60%	56%	66%	73%	74%	58%	65%
UV indexmax avg	3.0	4.6	6.6	8.7	9.8	10.6	10.5	9.4	8.2	6.2	3.8	2.8	7.0

Based on 2014–2024 hourly climate data · Updated Mar 2025

Confidence: High

Lifestyle Calendar · Flagstaff

Flagstaff offers a solid outdoor season. 3 months of the year are perfect for all activities. Dinner outside works 4/12 months, while walking is comfortable 12/12 months — impressive.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

4/12

Dinner Outside

0Jan: 0% viability

1Feb: 1% viability

4Mar: 4% viability

22Apr: 22% viability

46May: 46% viability

83Jun: 83% viability

91Jul: 91% viability

89Aug: 89% viability

74Sep: 74% viability

25Oct: 25% viability

1Nov: 1% viability

0Dec: 0% viability

4/12

Dinner Outside

0Jan: 0% viability

1Feb: 1% viability

4Mar: 4% viability

22Apr: 22% viability

46May: 46% viability

83Jun: 83% viability

91Jul: 91% viability

89Aug: 89% viability

74Sep: 74% viability

25Oct: 25% viability

1Nov: 1% viability

0Dec: 0% viability

36%

Cold

9/12

Lunch Outside

65Jan: 65% viability

64Feb: 64% viability

53Mar: 53% viability

75Apr: 75% viability

82May: 82% viability

81Jun: 81% viability

69Jul: 69% viability

71Aug: 71% viability

82Sep: 82% viability

85Oct: 85% viability

74Nov: 74% viability

64Dec: 64% viability

9/12

Lunch Outside

65Jan: 65% viability

64Feb: 64% viability

53Mar: 53% viability

75Apr: 75% viability

82May: 82% viability

81Jun: 81% viability

69Jul: 69% viability

71Aug: 71% viability

82Sep: 82% viability

85Oct: 85% viability

74Nov: 74% viability

64Dec: 64% viability

72%

Cold

12/12

Walking

99Jan: 99% viability

96Feb: 96% viability

97Mar: 97% viability

95Apr: 95% viability

92May: 92% viability

91Jun: 91% viability

66Jul: 66% viability

85Aug: 85% viability

95Sep: 95% viability

97Oct: 97% viability

98Nov: 98% viability

98Dec: 98% viability

12/12

Walking

99Jan: 99% viability

96Feb: 96% viability

97Mar: 97% viability

95Apr: 95% viability

92May: 92% viability

91Jun: 91% viability

66Jul: 66% viability

85Aug: 85% viability

95Sep: 95% viability

97Oct: 97% viability

98Nov: 98% viability

98Dec: 98% viability

92%

Heat

11/12

Running

99Jan: 99% viability

96Feb: 96% viability

97Mar: 97% viability

95Apr: 95% viability

91May: 91% viability

89Jun: 89% viability

59Jul: 59% viability

82Aug: 82% viability

92Sep: 92% viability

97Oct: 97% viability

98Nov: 98% viability

98Dec: 98% viability

11/12

Running

99Jan: 99% viability

96Feb: 96% viability

97Mar: 97% viability

95Apr: 95% viability

91May: 91% viability

89Jun: 89% viability

59Jul: 59% viability

82Aug: 82% viability

92Sep: 92% viability

97Oct: 97% viability

98Nov: 98% viability

98Dec: 98% viability

91%

Heat

Tap any month for details · Click activity name for overview

ComfortableModerateUncomfortable

Based on 2014–2024 hourly climate data · Updated Mar 2025

Confidence: High

Flagstaff · United States

Climate

Climate Lab · Flagstaff

Lifestyle Calendar · Flagstaff

Climate

Climate Lab · Flagstaff

Lifestyle Calendar · Flagstaff

Air Quality Profile

Air Quality Profile

Who thrives in Flagstaff

Frequently asked about Flagstaff

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