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Rosita, TX Weather
Rosita, Texas sits at 28.6255, -100.4278. Its warmest month is July, when the day usually reaches 103F, and its coldest is January, when the night usually falls to 42F. September is the wettest, with rain on about 5 days. The hottest day in the station record is 119F on June 27, 1998, and the coldest night 13F on December 30, 1983. This page carries live conditions, an hour by hour timeline, a ten day outlook, radar, monthly averages and searchable daily history back to 1940.
About Rosita weather
Rosita sits at 28.6255, -100.4278 and covers about 7.857 square miles. The forecast above is live: current conditions lead with the HRRR model, corrected against the nearest reporting station and against radar overhead, because a model can lag a storm and the radar cannot.
The tabs at the top of this page carry the hour by hour timeline, the ten day outlook and live radar. Where the models disagree about a day, the rock says so on the day rather than quietly picking a winner.
The rock grades itself against what actually happened and publishes the result whether it flatters it or not. Those standings live in the Receipts.
Where these numbers come from
Current conditions and forecast: NOAA forecast grids (the National Weather Service digital forecast, the National Blend of Models, HRRR and GFS) decoded on our own server, corrected against the nearest reporting station and our own radar. Open-Meteo is consulted only as a fallback when our server is silent.
Radar: NOAA MRMS merged reflectivity, rendered into tiles by myweatherrock.
Monthly averages and records: computed by myweatherrock from NOAA GHCN-Daily station records at the nearest qualifying station, named on this page with its distance. Measurements, not estimates.
Daily history search: the town's own NOAA GHCN-Daily station file, held on our server, measurements by day. Months the station missed fall back to the Open-Meteo historical archive (reanalysis), and the page says so when it does.
What the weather is usually like in Rosita
Rosita is warmest in July, when the day usually reaches 103F, and coldest in January, when the night usually falls to 42F. September is the wettest month, with rain on about 5 days of it.
Usual high and low, by month
Days with rain, by month
The same year as numbers
Month
Usual high
Usual low
Rain days
January
69F
42F
3
February
75F
47F
3
March
82F
54F
3
April
90F
61F
3
May
96F
69F
4
June
101F
74F
3
July
103F
76F
3
August
103F
76F
3
September
97F
72F
5
October
88F
62F
3
November
78F
51F
3
December
69F
43F
3
Thirty-year normals, 1991 to 2020, computed from the daily record, measured at the Piedras Negras (Obs) station 7.5 miles away. A rain day means at least a hundredth of an inch fell, the same measurable-precipitation mark the Weather Service uses. Source: computed from the station record, NOAA GHCN daily.
Rosita weather history, back to 1940
Pick any month back to 1940 and see what the archive holds for Rosita: the reanalysis record of what happened, day by day.
Reading this month last year to start you off.
Rosita weather records
In 42,959 days of observations Rosita has been as hot as 119F and as cold as 13F. Not averages: the actual days.
Hottest day
119F
June 27, 1998
Coldest night
13F
December 30, 1983
Wettest day
6.92 in
September 9, 2001
NOAA GHCN daily station records, observed 1955 to 2025: temperature at the Piedras Negras (Obs) station, 7.5 miles away. Station measurements, not estimates. Record dates reflect the station's own observation schedule, and the official state record may live at a different station.
Common questions about Rosita weather
Common questions
What is the weather usually like in Rosita, TX?
Rosita is warmest in July, when the day usually reaches 103F, and coldest in January, when the night usually falls to 42F. Rain falls on roughly 39 days a year, most often in September. Averages are thirty-year normals, 1991 to 2020, computed from the nearest NOAA station's own daily record.
How much does it rain in Rosita, TX?
About 39 days a year see at least a hundredth of an inch, which is the Weather Service's measurable-precipitation mark. September is the wettest month with rain on about 5 of its days, and January the driest with about 3.
What is the hottest it has ever been in Rosita, TX?
The hottest day measured for Rosita reached 119F on June 27, 1998, and the coldest night 13F on December 30, 1983. Both are real NOAA station measurements from the GHCN daily archive, observed 1955 to 2025, at the Piedras Negras (Obs) station. Not estimates, though the official state record may live at a different station.
Can I look up past weather for Rosita, TX?
Yes, and for free. The History tab on this page takes any month back to 1940 and shows every day of it: the high, the low, what fell, and that month's hottest and coldest day. No account and no payment.
Is the Rosita forecast on this page free, and does it track me?
It is free, carries no advertising, and needs no account. Nothing about a visitor leaves the device except the coordinates needed to fetch a forecast, and those are not stored against anyone.