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Oakdale, California climate

BSk Cold semi-arid

Oakdale has a seasonal mild-temperate climate (Cold semi-arid, Köppen BSk). The hottest month is July with an average daily high near 35°C, while the coldest is December averaging around 4°C at night. Precipitation totals about 312 mm a year and is strongly seasonal — January alone averages 65 mm while July barely receives 0 mm.

☀️ Summers

Very hot

Highs near 35°C in July.

About 89 days a year above 32 °C

❄️ Winters

Chilly

Lows near 4°C in December.

About 12 freezing nights a year

🌧️ Rain

Fairly dry

About 312 mm of rain a year.

Wettest in January

⛅ Sky & trend

Fairly sunny

More sun than cloud through the year.

+0.4 °C vs 50 years ago

Temperature & precipitation

Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figures

Clear vs cloudy days

Share of days each month that are clear, partly cloudy or cloudy · 1991–2020 · hover a month for the day counts

Oakdale climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	13	17	20	23	28	32	35	34	32	26	19	13
Avg temp (°C)	9	11	14	16	20	24	26	25	23	18	13	9
Avg low (°C)	4	5	7	9	12	15	17	17	15	11	6	4
Precipitation (mm)	65	56	45	25	17	4	0	0	2	14	27	56

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°C)	13	17	20	23	28	32
Avg temp (°C)	9	11	14	16	20	24
Avg low (°C)	4	5	7	9	12	15
Precipitation (mm)	65	56	45	25	17	4

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°C)	35	34	32	26	19	13
Avg temp (°C)	26	25	23	18	13	9
Avg low (°C)	17	17	15	11	6	4
Precipitation (mm)	0	0	2	14	27	56

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	10	9	8	5	3	1	0.1	0.1	0.4	2	6	9
Days with high ≥ 32°C (days)	—	—	—	1	7	16	26	22	15	3	—	—
Days with low ≤ 0°C (days)	5	1	—	0.0	—	—	—	—	—	—	1	6

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	10	9	8	5	3	1
Days with high ≥ 32°C (days)	—	—	—	1	7	16
Days with low ≤ 0°C (days)	5	1	—	0.0	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	0.1	0.1	0.4	2	6	9
Days with high ≥ 32°C (days)	26	22	15	3	—	—
Days with low ≤ 0°C (days)	—	—	—	—	1	6

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	59	53	49	40	31	18	13	12	15	26	44	56
Clear days (≤ 30% cloud)	7	8	11	14	19	24	27	27	24	21	12	7
Partly cloudy days (30–70%)	11	9	9	9	8	4	4	3	4	7	10	12
Cloudy days (≥ 70%)	13	10	10	7	5	2	0.8	0.8	1	4	8	12
Relative humidity (%)	80	80	78	71	61	49	42	44	46	53	67	76
Wind speed (mph)	3.8	4.3	4.5	5.6	6.4	7.0	6.7	6.2	5.2	4.5	4.0	4.1

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	59	53	49	40	31	18
Clear days (≤ 30% cloud)	7	8	11	14	19	24
Partly cloudy days (30–70%)	11	9	9	9	8	4
Cloudy days (≥ 70%)	13	10	10	7	5	2
Relative humidity (%)	80	80	78	71	61	49
Wind speed (mph)	3.8	4.3	4.5	5.6	6.4	7.0

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	13	12	15	26	44	56
Clear days (≤ 30% cloud)	27	27	24	21	12	7
Partly cloudy days (30–70%)	4	3	4	7	10	12
Cloudy days (≥ 70%)	0.8	0.8	1	4	8	12
Relative humidity (%)	42	44	46	53	67	76
Wind speed (mph)	6.7	6.2	5.2	4.5	4.0	4.1

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Modesto AP (NOAA GHCN station USW00023258), about 18 km from the city centre.

Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.

How we build these numbers →