United States · 1991–2020

Best time to visit
Southworth

For Southworth, July has the most comfortable weather in our climate comparison. Typical daytime highs are 25.1°C, nights average 14.6°C, and rainfall totals about 10 mm. Figures use measured 1991–2020 normals from the nearest eligible NOAA station.

Best all-round monthJuly

Typical daytime high25.1°C

Typical night-time low14.6°C

July rainfall10 mm

Overall comfort

July

Other strong months: August and June

96/100 weather score

Outdoor sightseeing

May

Other strong months: June and September

87/100 weather score

Make the answer personal

Choose the weather
that suits you.

Set the daytime temperature and rainfall you are comfortable with. We will show only the months that meet every choice, using the measured 1991–2020 averages below.

Daytime high: at least 18°CDaytime high: at most 28°CMonthly rain: no more than 100 mmWet days: no more than 10

5 months fit your choices for Southworth

May18.8°C day · 48 mm rain · 8.2 wet days

June21.7°C day · 30 mm rain · 6 wet days

July25.1°C day · 10 mm rain · 2 wet days

August25°C day · 17 mm rain · 2.5 wet days

September21.6°C day · 37 mm rain · 5.7 wet days

The lowest comfort score is 5 out of 100. January and December share that score. In January, that is mainly because days reach only 9°C, 15° below the 24°C the score treats as ideal.

Quick answers

Planning a trip to Southworth?

These answers come from the same measured monthly climate record shown on this page.

When is the best time to visit Southworth?

July is the strongest all-round choice in our temperature-and-rainfall comparison, with a typical daytime high of 25.1°C and 10 mm of rain.

What is the hottest month in Southworth?

July is hottest in this record, with a typical daytime high of 25.1°C and a night-time low of 14.6°C.

Which month has the least rain?

July has the lowest monthly rainfall total at 10 mm.

Is this a weather forecast?

No. These are long-term measured averages from 1991–2020. Check a current forecast before you travel.

Month by month

See how the weather
changes through the year.

The bars combine daytime temperature, night-time temperature and rainfall. The figures are measured historical averages, not a forecast for a particular trip.

59° / 2.9°

159.9° / 2.7°

2312.2° / 4.3°

4315.1° / 6.4°

6718.8° / 9.6°

8521.7° / 12.4°

9625.1° / 14.6°

9625° / 14.7°

8521.6° / 12.4°

4715.9° / 8.2°

1311.4° / 4.6°

58.5° / 2.6°

Monthly climate evidence for Southworth — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	9°C	2.9°C	131 mm	15.2	8 h 50	5	Good coverage
February	9.9°C	2.7°C	92 mm	12.5	10 h 10	15	Good coverage
March	12.2°C	4.3°C	101 mm	14.1	11 h 44	23	Good coverage
April	15.1°C	6.4°C	67 mm	11.7	13 h 33	43	Good coverage
May	18.8°C	9.6°C	48 mm	8.2	15 h 05	67	Good coverage
June	21.7°C	12.4°C	30 mm	6	15 h 57	85	Good coverage
July	25.1°C	14.6°C	10 mm	2	15 h 36	96	Good coverage
August	25°C	14.7°C	17 mm	2.5	14 h 16	96	Good coverage
September	21.6°C	12.4°C	37 mm	5.7	12 h 30	85	Good coverage
October	15.9°C	8.2°C	89 mm	10.6	10 h 46	47	Good coverage
November	11.4°C	4.6°C	146 mm	14.9	9 h 14	13	Good coverage
December	8.5°C	2.6°C	136 mm	14.9	8 h 28	5	Good coverage

Records at SEATTLE BOEING FLD, 1948–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	18.3°C26 Jan 2015	-16.1°C31 Jan 1950	55 mm21 Jan 1954	299 mm2006 · driest 21 mm in 1949	46
February	22.2°C13 Feb 2015	-15.6°C1 Feb 1950	66 mm9 Feb 1951	221 mm1999 · driest 31 mm in 2023	46
March	26.1°C29 Mar 2004	-8.9°C4 Mar 1955	62 mm15 Mar 2015	199 mm2014 · driest 16 mm in 1965	46
April	31.7°C18 Apr 2016	-1.1°C8 Apr 1952	47 mm14 Apr 2018	132 mm2018 · driest 6 mm in 2021	46
May	33.9°C21 May 1963	-1.1°C1 May 1954	30 mm3 May 2014	118 mm1948 · driest 3 mm in 2018	46
June	40.0°C28 Jun 2021	5.0°C12 Jun 1952	32 mm11 Jun 2001	83 mm1964 · driest 0 mm in 2019	46
July	40.6°C29 Jul 2009	7.2°C4 Jul 1949	19 mm1 Jul 1954	46 mm1948 · driest 0 mm in 2017	46
August	37.8°C9 Aug 1960	7.8°C30 Aug 1950	40 mm22 Aug 2001	77 mm2004 · driest 0 mm in 2012	45
September	33.3°C16 Sep 2025	2.2°C30 Sep 1950	47 mm30 Sep 1953	130 mm2013 · driest 1 mm in 2022	45
October	28.3°C16 Oct 2022	-2.7°C29 Oct 2023	103 mm20 Oct 2003	266 mm2016 · driest 16 mm in 2002	44
November	21.7°C8 Nov 2016	-13.3°C15 Nov 1955	77 mm20 Nov 1959	368 mm2006 · driest 8 mm in 2019	44
December	20.6°C10 Dec 2014	-11.7°C16 Dec 1964	101 mm3 Dec 2007	258 mm2015 · driest 27 mm in 2013	45

Typical days per month at SEATTLE BOEING FLD, 1991–2020
Month	Days 25°C+	Days 30°C+	Frost nights	Heavy rain (10 mm+)
January	0	0	7	5
February	0	0	7	3
March	<1	0	3	3
April	<1	0	<1	2
May	3	<1	<1	1
June	6	2	0	<1
July	16	4	0	<1
August	15	3	0	<1
September	6	<1	0	1
October	<1	0	<1	3
November	0	0	4	5
December	0	0	8	5

How often different weather occurs at SEATTLE BOEING FLD, based on its daily record
Month	Dry days reaching 20°C	Wet days	Days with heavy rain	Weeks with 3+ wet days	Typical high by year
January	0%	49%	14%	64%	6.3–10.6°C
February	<1%	44%	12%	58%	8.1–11.8°C
March	2%	44%	8%	61%	9.9–13.7°C
April	11%	35%	5%	45%	13.1–16.7°C
May	34%	24%	4%	27%	16.8–20.9°C
June	60%	19%	3%	20%	19.5–23.7°C
July	88%	8%	<1%	4%	22.7–27.3°C
August	86%	11%	2%	9%	22.8–26.6°C
September	60%	20%	4%	23%	20.0–23.2°C
October	12%	35%	9%	50%	14.7–17.5°C
November	<1%	50%	16%	68%	9.9–12.7°C
December	0%	50%	15%	69%	6.3–10.3°C

A dry day reaching 20°C records under 1 mm of rain. A wet day records at least 1 mm, while a heavy-rain day records at least 10 mm. The weekly figure is the share of seven-day periods containing three or more wet days. The final column shows the middle 80% of average daytime highs recorded for that month in individual years; a wider range means conditions have varied more from one year to another.

1948Each stripe is one year’s mean temperature against the 44-year average. Warmest: 2015. Coolest: 1955.2025

The evidence behind this page

Where these figures
come from.

Place identity: GeoNames 5811567
NOAA station: USW00024234 · SEATTLE BOEING FLD
Station distance: 14.5 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 47.51°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

Next step

Choose your month.
Then plan the details.

The weather comparison for Southworth is based on climate evidence, not payments from travel companies. Flight, accommodation and activity links will be clearly labelled when they are added; there are no booking offers on this page today.

How travel partnerships will work

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