5-day weather forecast Fairfax 12-07-2026

Weather forecast Fairfax Sunday, July 12 12.07.2026: sunny, temperature from 18 °C to 29 °C.

Precipitation probability 14%. Wind up to 3.61 m/s (gusts 7.56 m/s). Air humidity 55–95%, atmospheric pressure 764–767 mm Hg, UV index up to 10.3.

Sunrise 06:02
Sunset 20:52

New Moon2% illuminated
Moonrise 03:17 · Moonset 19:32

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Table

← Sat, Jul 11

Sun, Jul 12, 2026

Mon, Jul 13 →

Forecast from 18 °C to 29 °C and precipitation

Temperature & Precipitation
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Temperature (°C)	21	20	20	19	19	19	18	19	21	23	25	26	27	28	29	29	29	29	29	28	25	23	22	21
Precipitation (mm/hr)	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

Cloud cover and precipitation probability

Cloud cover & Rain chance
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Cloud cover (%)	0	0	0	0	0	2	6	14	21	33	41	41	7	26	24	17	15	15	9	0	0	0	0	0
Rain chance (%)	14	14	15	15	15	19	20	21	15	13	11	9	4	5	4	3	3	3	4	5	8	9	10	11

Wind speed and direction

Wind & Wind gust
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Wind (m/s)	3.61	3.19	3.11	2.81	2.61	2.39	2.39	2.31	2.19	2.5	2.81	3	2.81	2.89	3.19	3.31	3.19	3.19	3	2.69	2.31	2.19	2.39	2.39
Wind gust (m/s)	7.56	6.72	6.5	5.89	5.47	5.03	5.03	4.53	3.22	3	3.22	3.44	3.22	3.33	3.67	3.81	3.75	4	4	4.06	4.42	4.61	5.03	5.03
Wind direction (°)	ESE 103°	ESE 112°	ESE 115°	ESE 118°	ESE 110°	ESE 113°	ESE 110°	ESE 110°	ESE 104°	ESE 105°	ESE 115°	ESE 112°	ESE 110°	ESE 121°	SE 131°	SE 133°	SE 133°	SE 132°	SE 131°	SE 135°	SE 133°	ESE 115°	ESE 103°	ESE 110°

Air humidity

Humidity
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Humidity (%)	93	93	93	94	94	94	95	95	89	83	77	70	65	59	56	56	55	57	63	69	77	79	82	84

Atmospheric pressure

Pressure
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
Pressure (mm Hg)	764	765	765	765	765	765	765	766	766	767	767	767	767	766	766	766	765	765	765	765	765	765	765	766

Ultraviolet index

UV Index
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
UV Index	0	0	0	0	0	0	0	0.3	1	2.5	4.7	7.2	9.2	10.3	10.2	8.7	6.5	4	2	0.7	0.2	0	0	0

Air quality & pollen

Air quality
Time	00:00	01:00	02:00	03:00	04:00	05:00	06:00	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00	20:00	21:00	22:00	23:00
PM2.5 (µg/m³)	3	3.1	3.2	3.2	3.2	3.1	3.1	2.9	2.6	3.2	3.6	3.9	4.1	4.2	4.2	4.1	4.1	4	3.9	3.7	3.3	3.6	3.7	3.9
PM10 (µg/m³)	3.3	3.4	3.5	3.5	3.5	3.4	3.3	3.1	2.7	3.5	4	4.3	4.6	4.7	4.8	4.8	4.7	4.7	4.6	4.3	3.8	4	4.1	4.3
Ozone (O₃) (µg/m³)	62	59	54	48	43	37	31	34	52	79	101	112	118	122	123	122	119	116	113	106	94	80	68	61
NO₂ (µg/m³)	7.1	7.1	7.6	8.3	8.9	9.5	10	9.6	7.6	4.8	2.6	1.6	1.1	0.9	0.7	0.8	0.9	0.9	1	1.8	3.8	6.5	8.9	10.6
SO₂ (µg/m³)	0.4	0.5	0.5	0.5	0.5	0.5	0.4	0.5	0.7	1	1.2	1.2	1.1	1	0.9	0.8	0.7	0.6	0.6	0.6	0.6	0.6	0.6	0.6
CO (µg/m³)	160	163	160	154	148	145	144	142	141	140	138	134	130	126	125	124	124	123	122	124	132	142	154	167

← Sat, Jul 11

Sun, Jul 12, 2026

Mon, Jul 13 →

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Data Sources & Methodology

Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.

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