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Sidney, Ohio climate

Dfa Hot-summer humid continental

Sidney has a strongly seasonal cool-temperate climate (Hot-summer humid continental, Köppen Dfa). The hottest month is July with an average daily high near 84°F, while the coldest is January averaging around 18°F at night. Around 42 inches of precipitation falls each year, peaking in June (4.7 inches) and easing off in February (2.3 inches).

☀️ Summers

Warm

Highs near 84°F in July.

About 13 days a year above 90 °F

❄️ Winters

Very cold

Lows near 18°F in January.

About 131 freezing nights a year

🌧️ Rain

Wet

About 42 in of rain a year.

Wettest in June

⛅ Sky & trend

Often cloudy

Cloudy skies much of the year.

+0.8 °F 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

Sidney climate normals (1991–2020)

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	34	39	49	62	73	81	84	83	78	65	51	40
Avg temp (°F)	26	29	39	50	61	70	73	71	65	53	41	32
Avg low (°F)	18	20	28	38	49	59	62	60	53	42	32	24
Precipitation (in)	2.9	2.3	3.2	4.1	4.1	4.7	4.6	3.8	3.1	2.9	3.2	2.9

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Avg high (°F)	34	39	49	62	73	81
Avg temp (°F)	26	29	39	50	61	70
Avg low (°F)	18	20	28	38	49	59
Precipitation (in)	2.9	2.3	3.2	4.1	4.1	4.7

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Avg high (°F)	84	83	78	65	51	40
Avg temp (°F)	73	71	65	53	41	32
Avg low (°F)	62	60	53	42	32	24
Precipitation (in)	4.6	3.8	3.1	2.9	3.2	2.9

How often — frequency of weather events

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	13	10	12	13	14	13	10	9	9	10	10	11
Days with high ≥ 90°F (days)	—	—	—	—	0.1	3	5	3	2	0.2	—	—
Days with low ≤ 32°F (days)	27	25	21	9	0.7	—	—	—	0.1	5	18	24
Days with snowfall ≥ 1 in (days)	0.1	0.1	0.0	—	—	—	—	—	—	—	0.1	0.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Days with measurable rain (days)	13	10	12	13	14	13
Days with high ≥ 90°F (days)	—	—	—	—	0.1	3
Days with low ≤ 32°F (days)	27	25	21	9	0.7	—
Days with snowfall ≥ 1 in (days)	0.1	0.1	0.0	—	—	—

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Days with measurable rain (days)	10	9	9	10	10	11
Days with high ≥ 90°F (days)	5	3	2	0.2	—	—
Days with low ≤ 32°F (days)	—	—	0.1	5	18	24
Days with snowfall ≥ 1 in (days)	—	—	—	—	0.1	0.2

Sky & atmosphere

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	74	72	69	67	65	59	52	51	50	59	66	73
Clear days (≤ 30% cloud)	2	2	4	5	5	6	8	9	10	7	5	3
Partly cloudy days (30–70%)	9	9	10	9	10	12	13	13	11	10	8	8
Cloudy days (≥ 70%)	20	17	17	16	16	12	10	9	9	14	17	20
Relative humidity (%)	86	84	80	77	77	77	75	72	70	73	79	85
Wind speed (mph)	9.1	8.7	8.6	8.6	7.0	5.8	5.0	4.7	5.4	6.8	7.9	8.2

Jan – Jun	Jan	Feb	Mar	Apr	May	Jun
Cloud cover (%)	74	72	69	67	65	59
Clear days (≤ 30% cloud)	2	2	4	5	5	6
Partly cloudy days (30–70%)	9	9	10	9	10	12
Cloudy days (≥ 70%)	20	17	17	16	16	12
Relative humidity (%)	86	84	80	77	77	77
Wind speed (mph)	9.1	8.7	8.6	8.6	7.0	5.8

Jul – Dec	Jul	Aug	Sep	Oct	Nov	Dec
Cloud cover (%)	52	51	50	59	66	73
Clear days (≤ 30% cloud)	8	9	10	7	5	3
Partly cloudy days (30–70%)	13	13	11	10	8	8
Cloudy days (≥ 70%)	10	9	9	14	17	20
Relative humidity (%)	75	72	70	73	79	85
Wind speed (mph)	5.0	4.7	5.4	6.8	7.9	8.2

Methodology & sources

Temperature & precipitation — the official 1991–2020 climate normals from NOAA's U.S. Climate Normals, measured at Sidney 1 S (NOAA GHCN station USC00337693), about 2 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 →