How many sunny days does San Luis have per year?

San Luis averages approximately 343 sunny days per year, based on historical climate data.

What is the air quality in San Luis?

San Luis has an annual PM2.5 concentration of 9.7 µg/m³, classified as "Good" by WHO standards. Within WHO interim target 4. Low health risk for most people.

Arizona

San Luis · United States

A city in the United States.

Small city

32K

38m

16:46 UTC-7

USD

Explore on map →Climate twin →

San Luis, United States is a 32K-resident city with 343 sunny days and 0 frost days annually and an annual PM2.5 of 9.7 µg/m³. A city in the United States.

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Climate

Feels-like °C

Dinner outside

Climate Lab · San Luis

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	22	25	26	35	36	41	43	42	40	37	28	22	33
Daily mean°C	16	18	21	27	31	36	38	38	34	28	21	17	27
Daily low°C	8	10	13	17	22	27	31	31	26	20	12	9	19
Thermal comfort
High feelsDaily high feels-like°C	26	28	31	38	40	46	49	48	46	41	31	26	37
Mean feelsDaily mean feels-like°C	14	17	21	29	33	40	43	41	37	29	20	15	28
Low feelsDaily low feels-like°C	0	2	6	12	19	25	31	30	23	15	5	2	14
Humidity
HumidityRelative humidity%	28	22	26	16	18	21	26	29	31	21	20	30	24
Dewpoint°C	-4.2	-3.3	0.2	-0.7	4.5	10.8	16.0	17.4	14.2	4.2	-3.5	-1.0	4.6
Precipitation
Rainfallmm	18	3	6	0	0	0	1	7	5	0	0	6	47
Rain days≥1mm	2	1	2	0	0	0	0	2	1	0	0	2	10
Wind
Wind avgm/s	2.6	3.0	2.7	2.7	2.9	2.8	3.1	2.7	2.1	2.1	2.7	2.4	2.6
Wind gustsm/s	5.4	6.5	5.9	6.5	5.4	5.4	5.8	5.9	4.6	4.9	5.7	4.7	5.6
Sun & UV
Sunshinehrs/day	8.7	9.7	10.6	12.0	13.0	13.0	12.6	12.4	10.8	10.0	9.0	8.8	10.9
Clear skyindex	66%	82%	71%	89%	91%	88%	83%	88%	77%	87%	83%	72%	81%
UV indexmax avg	3.2	4.8	6.6	8.7	9.8	10.3	10.3	10.0	8.3	6.3	4.1	3.0	7.1

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

Confidence: High

Lifestyle Calendar · San Luis

Outdoor living in San Luis is seasonal. June through August are the toughest stretch. Dinner outside works 5/12 months, while lunch outside works 5/12 months.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

5/12

Dinner Outside

30Jan: 30% viability

46Feb: 46% viability

66Mar: 66% viability

88Apr: 88% viability

85May: 85% viability

57Jun: 57% viability

37Jul: 37% viability

41Aug: 41% viability

75Sep: 75% viability

92Oct: 92% viability

54Nov: 54% viability

23Dec: 23% viability

5/12

Dinner Outside

30Jan: 30% viability

46Feb: 46% viability

66Mar: 66% viability

88Apr: 88% viability

85May: 85% viability

57Jun: 57% viability

37Jul: 37% viability

41Aug: 41% viability

75Sep: 75% viability

92Oct: 92% viability

54Nov: 54% viability

23Dec: 23% viability

58%

Cold

5/12

Lunch Outside

95Jan: 95% viability

92Feb: 92% viability

92Mar: 92% viability

62Apr: 62% viability

27May: 27% viability

5Jun: 5% viability

0Jul: 0% viability

0Aug: 0% viability

6Sep: 6% viability

46Oct: 46% viability

95Nov: 95% viability

98Dec: 98% viability

5/12

Lunch Outside

95Jan: 95% viability

92Feb: 92% viability

92Mar: 92% viability

62Apr: 62% viability

27May: 27% viability

5Jun: 5% viability

0Jul: 0% viability

0Aug: 0% viability

6Sep: 6% viability

46Oct: 46% viability

95Nov: 95% viability

98Dec: 98% viability

52%

Heat

5/12

Walking

99Jan: 99% viability

98Feb: 98% viability

95Mar: 95% viability

60Apr: 60% viability

24May: 24% viability

4Jun: 4% viability

0Jul: 0% viability

1Aug: 1% viability

6Sep: 6% viability

43Oct: 43% viability

95Nov: 95% viability

100Dec: 100% viability

100

5/12

Walking

99Jan: 99% viability

98Feb: 98% viability

95Mar: 95% viability

60Apr: 60% viability

24May: 24% viability

4Jun: 4% viability

0Jul: 0% viability

1Aug: 1% viability

6Sep: 6% viability

43Oct: 43% viability

95Nov: 95% viability

100Dec: 100% viability

100

52%

Heat

3/12

Running

95Jan: 95% viability

74Feb: 74% viability

56Mar: 56% viability

16Apr: 16% viability

2May: 2% viability

0Jun: 0% viability

0Jul: 0% viability

0Aug: 0% viability

1Sep: 1% viability

10Oct: 10% viability

62Nov: 62% viability

92Dec: 92% viability

3/12

Running

95Jan: 95% viability

74Feb: 74% viability

56Mar: 56% viability

16Apr: 16% viability

2May: 2% viability

0Jun: 0% viability

0Jul: 0% viability

0Aug: 0% viability

1Sep: 1% viability

10Oct: 10% viability

62Nov: 62% viability

92Dec: 92% viability

34%

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

Dinner outside

Climate Lab · San Luis

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	22	25	26	35	36	41	43	42	40	37	28	22	33
Daily mean°C	16	18	21	27	31	36	38	38	34	28	21	17	27
Daily low°C	8	10	13	17	22	27	31	31	26	20	12	9	19
Thermal comfort
High feelsDaily high feels-like°C	26	28	31	38	40	46	49	48	46	41	31	26	37
Mean feelsDaily mean feels-like°C	14	17	21	29	33	40	43	41	37	29	20	15	28
Low feelsDaily low feels-like°C	0	2	6	12	19	25	31	30	23	15	5	2	14
Humidity
HumidityRelative humidity%	28	22	26	16	18	21	26	29	31	21	20	30	24
Dewpoint°C	-4.2	-3.3	0.2	-0.7	4.5	10.8	16.0	17.4	14.2	4.2	-3.5	-1.0	4.6
Precipitation
Rainfallmm	18	3	6	0	0	0	1	7	5	0	0	6	47
Rain days≥1mm	2	1	2	0	0	0	0	2	1	0	0	2	10
Wind
Wind avgm/s	2.6	3.0	2.7	2.7	2.9	2.8	3.1	2.7	2.1	2.1	2.7	2.4	2.6
Wind gustsm/s	5.4	6.5	5.9	6.5	5.4	5.4	5.8	5.9	4.6	4.9	5.7	4.7	5.6
Sun & UV
Sunshinehrs/day	8.7	9.7	10.6	12.0	13.0	13.0	12.6	12.4	10.8	10.0	9.0	8.8	10.9
Clear skyindex	66%	82%	71%	89%	91%	88%	83%	88%	77%	87%	83%	72%	81%
UV indexmax avg	3.2	4.8	6.6	8.7	9.8	10.3	10.3	10.0	8.3	6.3	4.1	3.0	7.1

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

Confidence: High

Lifestyle Calendar · San Luis

Outdoor living in San Luis is seasonal. June through August are the toughest stretch. Dinner outside works 5/12 months, while lunch outside works 5/12 months.

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Annual

5/12

Dinner Outside

30Jan: 30% viability

46Feb: 46% viability

66Mar: 66% viability

88Apr: 88% viability

85May: 85% viability

57Jun: 57% viability

37Jul: 37% viability

41Aug: 41% viability

75Sep: 75% viability

92Oct: 92% viability

54Nov: 54% viability

23Dec: 23% viability

5/12

Dinner Outside

30Jan: 30% viability

46Feb: 46% viability

66Mar: 66% viability

88Apr: 88% viability

85May: 85% viability

57Jun: 57% viability

37Jul: 37% viability

41Aug: 41% viability

75Sep: 75% viability

92Oct: 92% viability

54Nov: 54% viability

23Dec: 23% viability

58%

Cold

5/12

Lunch Outside

95Jan: 95% viability

92Feb: 92% viability

92Mar: 92% viability

62Apr: 62% viability

27May: 27% viability

5Jun: 5% viability

0Jul: 0% viability

0Aug: 0% viability

6Sep: 6% viability

46Oct: 46% viability

95Nov: 95% viability

98Dec: 98% viability

5/12

Lunch Outside

95Jan: 95% viability

92Feb: 92% viability

92Mar: 92% viability

62Apr: 62% viability

27May: 27% viability

5Jun: 5% viability

0Jul: 0% viability

0Aug: 0% viability

6Sep: 6% viability

46Oct: 46% viability

95Nov: 95% viability

98Dec: 98% viability

52%

Heat

5/12

Walking

99Jan: 99% viability

98Feb: 98% viability

95Mar: 95% viability

60Apr: 60% viability

24May: 24% viability

4Jun: 4% viability

0Jul: 0% viability

1Aug: 1% viability

6Sep: 6% viability

43Oct: 43% viability

95Nov: 95% viability

100Dec: 100% viability

100

5/12

Walking

99Jan: 99% viability

98Feb: 98% viability

95Mar: 95% viability

60Apr: 60% viability

24May: 24% viability

4Jun: 4% viability

0Jul: 0% viability

1Aug: 1% viability

6Sep: 6% viability

43Oct: 43% viability

95Nov: 95% viability

100Dec: 100% viability

100

52%

Heat

3/12

Running

95Jan: 95% viability

74Feb: 74% viability

56Mar: 56% viability

16Apr: 16% viability

2May: 2% viability

0Jun: 0% viability

0Jul: 0% viability

0Aug: 0% viability

1Sep: 1% viability

10Oct: 10% viability

62Nov: 62% viability

92Dec: 92% viability

3/12

Running

95Jan: 95% viability

74Feb: 74% viability

56Mar: 56% viability

16Apr: 16% viability

2May: 2% viability

0Jun: 0% viability

0Jul: 0% viability

0Aug: 0% viability

1Sep: 1% viability

10Oct: 10% viability

62Nov: 62% viability

92Dec: 92% viability

34%

Heat

Tap any month for details · Click activity name for overview

ComfortableModerateUncomfortable

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

Confidence: High

San Luis · United States

Climate

Climate Lab · San Luis

Lifestyle Calendar · San Luis

Climate

Climate Lab · San Luis

Lifestyle Calendar · San Luis

Air Quality Profile

Air Quality Profile

Who thrives in San Luis

Frequently asked about San Luis

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